Harken 40mm Carbo Air Double Swivel Block w/Becket [2639] Marine Hardware | Swim Platforms Add safety to older boats

Add safety to older boats easily

Lasts Extra Long

A simple isolated CAN Bus solution

Tournament proven Nok-Outs with patented roller guides and twin tension adjustments easily pull large or small baits and artificial lures while protecting against line chafing

Waterproof Snap-On Cover

Harken 40mm Carbo Air Double Swivel Block w/Becket [2639] Marine Hardware | Swim Platforms Add safety to older boats40mm Carbo Air Double Swivel Block with Becket Low friction Carbo Air blocks are lightweight, strong, reliableand 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 (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 Quick Guide (pdf)