Harken 40mm Block with Swivel and Becket - 2637

Harken Carbo 40mm block complete with shackle and swivel on one end and a becket on the other.

This 40mm Harken block is popular for mainsheet systems on a number of boats.

Harken Carbo Air blocks are lightweight, strong, reliable and affordable with long lasting quality. These small, compact blocks have very high working loads for safe and easy trimming.

Specifications