Harken 40mm Double Block — Swivel, Becket 2639 Ø8mm Sheave Ø 40 + 24

Sheave Ø 40 + 24 mm Max

They soon discover that there is so much more to short-handed sailing than a lack of crew

Integrated DSC transmitter (Digital Selective Calling)*

4X More Waterproof Durable

Ideal for single line spinnaker hoist systems

Harken 40mm Double Block — Swivel, Becket 2639 Ø8mm Sheave Ø 40 + 24Low friction Carbo Air blocks are lightweight, strong, reliableand affordable. Companions to our popular Harken Big Boat blocks, these small, compact blocks have very high working loads for safe, easy trimming. Part No. 2639 Sheave (mm) 40 mm Sheave (in) 1 9 16 in Maximum line (mm) 10 mm Maximum line (in) 3 8 in Maximum working load (kg) 440 kg Maximum working load (lb) 970 lb