Series 45 Core Block™ - Single - Swivel Shackle Head Core Blocks™ are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Acetal sheave, alloy cheeks and stainless fixings complete the durable package. For reliability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing. Universal Bearing Dynamic and high static load performance The Ronstan Universal Bearing incorporates our proven 2-stage bearing system Stage 1 - Under moderate loads, Acetal ball bearings ensure minimum friction. Stage 2 - Under heavy loads, where deformation of ball bearings alone would result in increased friction, a sliding Acetal bearing on a polished stainless steel race takes over, maintaining low friction performance. Additionally the ball bearings are configured to act as a thrust bearing between the sheave and cheeks, preventing the sheave from rubbing on the cheeks and causing friction when the line lead in and out of the block isn't perfect. Particularly important for cheek blocks. Alloy Cheek Plates Block cheeks are manufactured from the highest quality alloy for maximum strength. Material optimisation and the cut-away design minimises weight and allows easy fresh water rinsing of salt and debris from the bearings. Cheek design has been further styled with flaring at the block throat and reduced gap between the cheek and sheave, minimising rope wear. Features: High dynamic and static load capacity Efficient 2-stage bearing system Ball bearings to counteract side thrust loads Class leading performance and sleek, contemporary styling Durable aluminium alloy cheek plates Central hub hole can be used as a becket take-off or tie-up point Applications: Ideal for mainsheet, halyard and spinnaker sheet applications on boats to 10M (33') Various control line applications on larger yachts Alloy sheave models are available for use with wire Materials: Sheave: U.V. stabilized Acetal Cheek body: Aluminium Alloy Ball Bearings: High compression strength carbon black Acetal Shackle, head post & hub: Grade 316 stainless steel Specifications: Sheave Ø: 45mm(1-3/4") Max. Rope Ø: 12mm(1/2") Pin Ø: 5mm(3/16") M.W.L.: 700kg(1,540lbs) B. L.: 1,400kg(3,090lbs) Weight: 104g(3.6oz)

Series 60 Core Block™ - Single Core Blocks™ are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Acetal sheave, alloy cheeks and stainless fixings complete the durable package. For reliability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing. Universal Bearing Dynamic and high static load performance The Ronstan Universal Bearing incorporates our proven 2-stage bearing system Stage 1 - Under moderate loads, Acetal ball bearings ensure minimum friction. Stage 2 - Under heavy loads, where deformation of ball bearings alone would result in increased friction, a sliding Acetal bearing on a polished stainless steel race takes over, maintaining low friction performance. Additionally the ball bearings are configured to act as a thrust bearing between the sheave and cheeks, preventing the sheave from rubbing on the cheeks and causing friction when the line lead in and out of the block isn't perfect. Particularly important for cheek blocks. Alloy Cheek Plates Block cheeks are manufactured from the highest quality alloy for maximum strength. Material optimisation and the cut-away design minimises weight and allows easy fresh water rinsing of salt and debris from the bearings. Cheek design has been further styled with flaring at the block throat and reduced gap between the cheek and sheave, minimising rope wear. Universal head The head assembly incorporates a brass bearing washer to provide smooth 360™ rotation of the post and shackle. A set screw arrangement allows the head to be locked at 0™ or 90™. Shackles are high quality forged grade 316 stainless steel. Features: Class leading performance and sleek, contemporary styling Excellent dynamic and high static load performance Less than half the friction of the nearest competitor Universal head with full 3-axis articulation Head posts can be locked at 0 or 90 degrees, by using a 2.5mm Hex/Allen Key Central hub hole can be used as a becket take-off or tie-up point Applications: Ideal for mainsheet, halyard and spinnaker sheet applications on boats to 12M (40') Various control line applications on larger yachts Materials: Sheave: U.V. stabilized Acetal Cheek body: Aluminium Alloy Ball Bearings: High compression strength carbon black Acetal Shackle, head post & hub: Grade 316 stainless steel Specifications: Sheave Ø: 60mm(2-3/8") Max. Rope Ø: 12mm(1/2") Pin Ø: 6mm(1/4") M.W.L.: 1,000kg(2,200lbs) B. L.: 2,000kg(4,410lbs) Weight: 235g(8.3oz)

Series 60 Core Block™ - Single - Becket Core Blocks™ are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Acetal sheave, alloy cheeks and stainless fixings complete the durable package. For reliability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing. Universal Bearing Dynamic and high static load performance The Ronstan Universal Bearing incorporates our proven 2-stage bearing system Stage 1 - Under moderate loads, Acetal ball bearings ensure minimum friction. Stage 2 - Under heavy loads, where deformation of ball bearings alone would result in increased friction, a sliding Acetal bearing on a polished stainless steel race takes over, maintaining low friction performance. Additionally the ball bearings are configured to act as a thrust bearing between the sheave and cheeks, preventing the sheave from rubbing on the cheeks and causing friction when the line lead in and out of the block isn't perfect. Particularly important for cheek blocks. Alloy Cheek Plates Block cheeks are manufactured from the highest quality alloy for maximum strength. Material optimisation and the cut-away design minimises weight and allows easy fresh water rinsing of salt and debris from the bearings. Cheek design has been further styled with flaring at the block throat and reduced gap between the cheek and sheave, minimising rope wear. Universal head The head assembly incorporates a brass bearing washer to provide smooth 360™ rotation of the post and shackle. A set screw arrangement allows the head to be locked at 0™ or 90™. Shackles are high quality forged grade 316 stainless steel. Features: Class leading performance and sleek, contemporary styling Excellent dynamic and high static load performance Less than half the friction of the nearest competitor Universal head with full 3-axis articulation Head posts can be locked at 0 or 90 degrees, by using a 2.5mm Hex/Allen Key Central hub hole can be used as a becket take-off or tie-up point Applications: Ideal for mainsheet, halyard and spinnaker sheet applications on boats to 12M (40') Various control line applications on larger yachts Materials: Sheave: U.V. stabilized Acetal Cheek body: Aluminium Alloy Ball Bearings: High compression strength carbon black Acetal Shackle, head post & hub: Grade 316 stainless steel Pin: 2205 Stainless Steel Specifications: Sheave Ø: 60mm(2-3/8") Max. Rope Ø: 12mm(1/2") Pin Ø: 6mm(1/4") M.W.L.: 1,000kg(2,200lbs) B. L.: 2,000kg(4,410lbs) Weight: 275g(9.7oz)

Series 75 Core Block™ - Single Core Blocks™ are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Acetal sheave, alloy cheeks and stainless fixings complete the durable package. For reliability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing. Universal Bearing Dynamic and high static load performance The Ronstan Universal Bearing incorporates our proven 2-stage bearing system Stage 1 - Under moderate loads, Acetal ball bearings ensure minimum friction. Stage 2 - Under heavy loads, where deformation of ball bearings alone would result in increased friction, a sliding Acetal bearing on a polished stainless steel race takes over, maintaining low friction performance. Additionally the ball bearings are configured to act as a thrust bearing between the sheave and cheeks, preventing the sheave from rubbing on the cheeks and causing friction when the line lead in and out of the block isn't perfect. Particularly important for cheek blocks. Alloy Cheek Plates Block cheeks are manufactured from the highest quality alloy for maximum strength. Material optimisation and the cut-away design minimises weight and allows easy fresh water rinsing of salt and debris from the bearings. Cheek design has been further styled with flaring at the block throat and reduced gap between the cheek and sheave, minimising rope wear. Universal head The head assembly incorporates a brass bearing washer to provide smooth 360™ rotation of the post and shackle. A set screw arrangement allows the head to be locked at 0™ or 90™. Shackles are high quality forged grade 316 stainless steel. Features: Class leading performance and sleek, contemporary styling Excellent dynamic and high static load performance Less than half the friction of the nearest competitor Universal head with full 3-axis articulation Head posts can be locked at 0 or 90 degrees, by using a 2.5mm Hex/Allen Key Central hub hole can be used as a becket take-off or tie-up point Applications: Ideal for mainsheet, halyard and spinnaker sheet applications on boats to 14M (46') Various control line applications on larger yachts Materials: Sheave: U.V. stabilized Acetal Cheek body: Aluminium Alloy Ball Bearings: High compression strength carbon black Acetal Shackle, head post & hub: Grade 316 stainless steel Specifications: Sheave Ø: 75mm(3") Max. Rope Ø: 14mm(9/16") Pin Ø: 8mm(5/16") M.W.L.: 1,500kg(3,300lbs) B. L.: 3,000kg(6,600lbs) Weight: 354g(12.5oz)

Series 75 Core Block™ - Single - Aluminum Rope/Wire Sheave Core Blocks™ are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Acetal sheave, alloy cheeks and stainless fixings complete the durable package. For reliability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing. Universal Bearing Dynamic and high static load performance The Ronstan Universal Bearing incorporates our proven 2-stage bearing system Stage 1 - Under moderate loads, Acetal ball bearings ensure minimum friction. Stage 2 - Under heavy loads, where deformation of ball bearings alone would result in increased friction, a sliding Acetal bearing on a polished stainless steel race takes over, maintaining low friction performance. Additionally the ball bearings are configured to act as a thrust bearing between the sheave and cheeks, preventing the sheave from rubbing on the cheeks and causing friction when the line lead in and out of the block isn't perfect. Particularly important for cheek blocks. Alloy Cheek Plates Block cheeks are manufactured from the highest quality alloy for maximum strength. Material optimisation and the cut-away design minimises weight and allows easy fresh water rinsing of salt and debris from the bearings. Cheek design has been further styled with flaring at the block throat and reduced gap between the cheek and sheave, minimising rope wear. Universal head The head assembly incorporates a brass bearing washer to provide smooth 360™ rotation of the post and shackle. A set screw arrangement allows the head to be locked at 0™ or 90™. Shackles are high quality forged grade 316 stainless steel. Features: Class leading performance and sleek, contemporary styling Excellent dynamic and high static load performance Less than half the friction of the nearest competitor Universal head with full 3-axis articulation Head posts can be locked at 0 or 90 degrees, by using a 2.5mm Hex/Allen Key Central hub hole can be used as a becket take-off or tie-up point Durable alloy Rope/Wire sheave Applications: Ideal for mainsheet, halyard and spinnaker sheet applications on boats to 14M (46') Various control line applications on larger yachts Aluminium sheave which has a deep groove profile specifically made for use with wire Materials: Sheave: U.V. stabilized Acetal Cheek body: Aluminium Alloy Ball Bearings: High compression strength carbon black Acetal Shackle, head post & hub: Grade 316 stainless steel Specifications: Sheave Ø: 75mm(3") Max. Rope Ø: 14mm(9/16") Max. Cable Ø: 8mm(5/16") Pin Ø: 8mm(5/16") M.W.L.: 1,500kg(3,300lbs) B. L.: 3,000kg(6,600lbs) Weight: 432g(15.3oz)

Series 45 Core Block - Single/Swivel Haylard Core Blocks™ are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Acetal sheave, alloy cheeks and stainless fixings complete the durable package. For reliability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing. Universal Bearing Dynamic and high static load performance The Ronstan Universal Bearing incorporates our proven 2-stage bearing system Stage 1 - Under moderate loads, Acetal ball bearings ensure minimum friction Stage 2 - Under heavy loads, where deformation of ball bearings alone would result in increased friction, a sliding Acetal bearing on a polished stainless steel race takes over, maintaining low friction performance Additionally the ball bearings are configured to act as a thrust bearing between the sheave and cheeks, preventing the sheave from rubbing on the cheeks and causing friction when the line lead in and out of the block isn’t perfect. Particularly important for cheek blocks Alloy Cheek Plates Block cheeks are manufactured from the highest quality alloy for maximum strength. Material optimization and the cut-away design minimizes weight and allows easy fresh water rinsing of salt and debris from the bearings.  Cheek design has been further styled with flaring at the block throat and reduced gap between the cheek and sheave, minimizing rope wear. Features: High dynamic and static load capacity Efficient 2-stage bearing system Ball bearings to counteract side thrust loads Class leading performance and sleek, contemporary styling Durable aluminium alloy cheek plates Central hub hole can be used as a becket take-off or tie-up point Incorporates a low profile swivel head fork Features a removable screw pin for attachment to padeyes Suitable for 12mm (1/2") diam. mast collar post Applications: Ideal for mainsheet, halyard and spinnaker sheet applications on boats to 10M (33') Various control line applications on larger yachts Alloy sheave models are available for use with wire Materials: Sheave: U.V. stabilised Acetal Cheek body: Aluminium Alloy Ball Bearings: High compression strength carbon black Acetal Shackle, head post & hub: Grade 316 stainless steel

Series 50 All Purpose Single Loop Top - Becket Features: Exceptionally high working loads Low maintenance, long service life Self-lubricating Acetal polymer sheave ensures low friction and extreme durability Snap fit removable becket pin Spare Parts - RF51010 Replacement Becket Pin All purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.Becket pin is removable so line can be spliced prior to fitting and is ingeniously locked into position without the use of a clevis pin, split ring or tools. Applications: Mainsheet and halyard applications, vang and spinnaker control lines on boats to 10m (33ft) S60 - on boats up to 12m (40ft) Materials: Grade 316 stainless steel load strap Impact and UV resistant, fiber reinforced Nylon cheeks

Series 30 Utility Block- Double, Tube Rivet Features: Lightweight durable construction Economical Maintenance free Product Information: Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance.Hollow rivets accept fixing screws, shackles or can be used as a becket for extra purchase. Applications: Vang, cunningham and trapeze retriever systems on dinghies Leech line tackles, bunk adjusters etc on larger yachts Materials: U.V. stabilized Acetal sheaves Grade 316 stainless steel cheeks

Series 30 Utility Block- Cheek, Curved Base Features: Lightweight durable construction Economical Maintenance free Product Information: Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance. Applications: Vang, cunningham and trapeze retriever systems on dinghies Leech line tackles, bunk adjusters etc on larger yachts Materials: U.V. stabilized Acetal sheaves Grade 316 stainless steel cheeks

Series 20 BB Block Single Becket Option Lashing High Load Features: Suits up to 4mm (5/32”) lashing Supplied with 750mm (30”) x 2mm (3/32”) diameter, Dyneema® single braid lashing line

Series 20 Lead Block - Single Pivoting Sheave Features: 180 degree pivoting sheave Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers. Precision molded Acetal sheaves running on stainless steel or Torlon® ball bearings provide high performance & low friction. Applications: Pivoting version suits controls that need to be trimmed from either side of the boat. Materials: Grade 316 stainless steel ball bearings UV stabilized Acetal sheave Grade 316 stainless steel load housing

Series 15 Ball Bearing Utility Block - Single Block, Loop Head Features: Smallest and lightest ball bearing block available Precision molded acetal sheave running on stainless steel ball bearings provide high performance & low friction Single loop head blocks include an O-ring to separate running line from head lashing or fixing Applications: Dinghy control lines Vangs, cunninghams and tweakers Shock cord tensioning systems Materials: BB sheaves: UV stabilized acetal Ball bearings: Stainless steel Cheeks: Grade 316 stainless steel

Series 15 Ball Bearing Utility Block - Single Block, Becket, Loop Head Features: Smallest and lightest ball bearing block available Precision molded acetal sheave running on stainless steel ball bearings provide high performance & low friction Single loop head blocks include an O-ring to separate running line from head lashing or fixing Applications: Dinghy control lines Vangs, cunninghams and tweakers Shock cord tensioning systems Materials: BB sheaves: UV stabilized acetal Ball bearings: Stainless steel Cheeks: Grade 316 stainless steel

Series 15 Ball Bearing Utility Block - Triple Block, Becket, Loop Head Features: Smallest and lightest ball bearing block available Precision molded acetal sheave running on stainless steel ball bearings provide high performance & low friction Single loop head blocks include an O-ring to separate running line from head lashing or fixing Applications: Dinghy control lines Vangs, cunninghams and tweakers Shock cord tensioning systems Materials: BB sheaves: UV stabilized acetal Ball bearings: Stainless steel Cheeks: Grade 316 stainless steel

Series 15 Ball Bearing Utility Block - Single, Swivel Shackle Head Features: Smallest and lightest ball bearing block available Precision molded acetal sheave running on stainless steel ball bearings provide high performance & low friction Single loop head blocks include an O-ring to separate running line from head lashing or fixing Applications: Dinghy control lines Vangs, cunninghams and tweakers Shock cord tensioning systems Materials: BB sheaves: UV stabilized acetal Ball bearings: Stainless steel Cheeks: Grade 316 stainless steel