![Chinook 2-bolt Tendon Mast Base w/ US Cup](http://oceanairsports.com/cdn/shop/products/2-bolt_US_Cup_tendon_base_{width}x.jpg?v=1531234749)
Chinook's 2-bolt base with the US Cup connection
-Easily detach your sail from your board with a single button.
-Built in wrench to unscrew base on bottom of detachable universal joint
-Easily detach your sail from your board with a single button.