The Chinook Sailing Aluminum US CUP 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 Power-Haul pulley and cleat system and 2 cm adjustment increments.
- Minimum length is 6cm with the collar and approx. 4cm with the collar removed.
- Reduced Diameter
- UP Cup connection to your mast extension.
- Large brass pulleys for increased leverage