The Chinook Sailing Aluminum US Cup-RDM-Medium 28cm Extension uses custom alloy and bell shaped tubing to provide the best weight to strength ratio available in aluminum construction. The new, easy to use Composite Snap Collar system eliminates lost pins or collars and can be quickly adjusted with one hand. All come with the proven US Power-Haul pulley and cleat system and 2 cm adjustment increments.
Adds maximum of 28cm to mast length
Large brass pulleys for increased leverage