Harken 75mm Aluminum Standup Block Harken Self Contained Sheaves This series of strut features

This series of strut features Forespar's special socket-type end that automatically locks onto the toggle-pin mast fitting with an easy push on the strut

and douse mainsails

Harken Set/Big Boat Track Risers CB Set

the slide can often be inserted at the mast opening for the sail and dropped or lowered with a string

the main halyard can be attached to the aft end of the boom and tightened for further support

Harken 75mm Aluminum Standup Block Harken Self Contained Sheaves This series of strut featuresHarken 75mm Aluminum Standup Block Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free running, powerful performers are used for sail controls that see lots of action. Sideplates and sheaves Hard Lube anodized for maximum UV protection and a smooth surface. Center cage keeps Torlon roller bearings separated and parallel to reduce friction. Torlon is a registered trademark of Solvay Advanced