1 Ton Twing Block The Twing block features a spring-loaded side opening mechanism for true one-handed rigging, even while wearing sailing gloves. Black anodized aluminum sideplates are edged with robust bumpers to protect the block, topsides, and deck. The sheave is aluminum rolling on a bearing system shared with Harken's existing 2.3T high-load snatch block.  Features: Side opening side plate - Easy to rig and remove from sheet Spring loaded button release - Quick one-handed rigging Anti-capsize bar - Keeps sheave aligned on sheet ULC main bearing - Sheave turns smoothly under extreme loading Sideload balls - Carry loads especially when the block is not aligned in light air Thimble at pivot base - Use 1:1 or 2:1 up-down control Machined aluminum inner sideplates - High strength, low weight Soft polyurethane outer side plate bumpers - Protects block and deck Uses: Twing, tweaker control for code zero sheets Can be used as a snatch block when combined with a soft shackle Spinnaker sheet and guy control Specifications: Sheave Ø (mm): 38.5 mm Sheave Ø (in): 1-1/2 in Maximum line Ø (mm): 11 mm Maximum line Ø (in): .43 in Maximum working load (kg): 1000 kg Maximum working load (lb): 2205 lb Breaking load (kg): 2000 kg Breaking load (lb): 4409 lb

Ampco Pumps C218/328-KIT1-VITON Seal Kit #1 Viton - 218/328

40mm Twing Block Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to our popular Harken Big Boat blocks, these small, compact blocks have very high working loads for safe, easy trimming. Features: Opening side plate - Easy to rig and remove from sheet Spring biased to open when unlatched - One-handed operation Roller at pivot base - Use 1:1 or 2:1 up-down control Carbo Air® block construction - High strength for durability and lightweight for maximum float in light air Uses: Dinghies, sport boats, and small keelboats Spinnaker sheet and guy control Code zero sheet up-down control Specifications: Sheave Ø (mm): 40 mm Sheave Ø (in): 1-9/16 in Length (mm): 89 mm Length (in): 3-1/2 in Weight (g): 86 g Weight (oz): 3 oz Maximum line Ø (mm): 12 mm Maximum line Ø (in): 3/8 in Maximum working load (kg): 275 kg Maximum working load (lb): 606 lb Breaking load (kg): 825 kg Breaking load (lb): 1818 lb

1" Bolt Down Block The 25mm plain bearing block range is one of SeaSure's oldest and best-selling ranges. The range uses marine-grade stainless steel side plates and rivets with an arnite (plastic) sheave, which is incredibly hard-wearing and light. Features: This range could be used to create purchase systems for lifting, garage door mechanisms, storage solutions, etc. Specifications: Fixing Holes: 5mm Dia. Max Rope: 8mm Breaking Load: 500kg

Size 1 Single Swivel Block with Becket With the unique super-low friction ball race systems, featuring acetal sheaves and delrin ball bearings, running on a large diameter center boss. This allows us to fit more load-bearing balls, which ensure extremely low friction performance, even under high loads. Specifications: Sheave size: 20mm x 8mm Max rope diameter: 5mm Safe working load: 275kg / 606lbs Breaking load: 550kg / 1210lbs Length: 39.1mm Weight: 13g

NMEA 2000 T-Connector - 1-Way Extension Block As the NMEA 2000 network expands beyond the 3-device limit of Digital Yacht’s NMEA 2000 Starter Kit, users can use one of these single T-pieces to add devices. With male > female > female connectors, multiple T-pieces can be plugged together or added to the 4-way T-piece included in the starter kit. The lower “drop cable” connector is female so that there are no exposed pins when the drop cable is removed. *Digital Yacht can supply NMEA 2000 cables and connectors to expand the NMEA 2000 to whatever size is needed (up to the maximum 50 NMEA 2000 device limit). Features: NMEA 2000 Single T-Piece Standard “Micro C” connectors make it very easy for future network expansion Metal connectors improve reliability Waterproof rating of IP68

57mm Carbo Air Block with Swivel Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. Specifications: Sheave: 57mm / 2-1/4in Length: 110mm / 4-5/16in Weight: 87g / 3.1oz Shackle pin: 5mm / 3/16in Maximum line: 10mm / 3/8in Maximum working load: 359kg / 792lb Breaking load: 1079kg / 2380lb

75mm Carbo Air Block with Swivel Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. Specifications: Sheave: 75mm / 2-15/16in Length: 137mm / 5-3/8in Weight: 195g / 6.9oz Shackle pin: 6mm / 1/4in Maximum line: 14mm / 9/16in Maximum working load: 550kg / 1213lb Breaking load: 1650kg / 3638lb

29mm Carbo Air Block with Swivel Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. Specifications: Sheave: 29mm / 1-1/8in Length: 66mm / 2-5/8in Weight: 26g / .9oz Shackle pin: 4mm / 5/32in Maximum line: 8mm / 5/16in Maximum working load: 150kg / 330lb Breaking load: 454kg / 1000lb

29mm Carbo Air Block Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. Specifications: Sheave: 29mm / 1-1/8in Length: 49mm / 1-15/16in Weight: 23g / .8oz Shackle pin: 4mm / 5/32in Maximum line: 8mm / 5/16in Maximum working load: 150kg / 330lb Breaking load: 454kg / 1000lb

57mm Carbo Quad Block - Swivel Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to our popular Harken Big Boat blocks, these small, compact blocks have very high working loads for safe, easy trimming. Features: Sheave Ø (mm) 57 mm Sheave Ø (in) 2 1/4 in Maximum line Ø (mm) 10 mm Maximum line Ø (in) 3/8 in Maximum working load (kg) 1080 kg Maximum working load (lb) 2380 lb

40mm Carbo Air Block with Swivel Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. Specifications: Sheave: 40mm / 1-9/ 16in Length: 86mm / 3-3/8in Weight: 44g / 1.6oz Shackle pin: 4mm / 5/32in Maximum line: 10mm / 3/8in Maximum working load: 220kg / 485lb Breaking load: 735kg / 1620lb

40mm Carbo Air Block with Cam Cleat Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming.  Specifications: Sheave Ø (mm)40 mm Sheave Ø (in)1 9/16 in Maximum line Ø (mm)6 mm Maximum line Ø (in)1/4 in Maximum working load (kg)68 kg Maximum working load (lb)150 lb

40mm Carbo Air Block with Cam Cleat & Becket Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. Specifications: Sheave Ø (mm)40 mm Sheave Ø (in)1 9/16 in Maximum line Ø (mm)6 mm Maximum line Ø (in)1/4 in Maximum working load (kg)136 kg Maximum working load (lb)300 lb

60mm Single Element Block Mastbase with Swivel Element blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a proven journal bearing. So size for size, Element is priced significantly lower, than our previously least expensive blocks. Sideplates are hardcoat-anodized to resist corrosion. A tough composite bearing sheave resists corrosion for a long service life. Specifications: Sheave: 60mm (2-3/8" Max Line: 14mm (9/16") Max Working Load: 1100kg (2425lbs)