Got a board or a boat that takes the old style large aluminum masts? Lots of people do. It was a case of "seemed like a good idea at the time." Now you know better and want to use a standard mast, but you can''t because the fittings are wrong. Well, Chinook has finally come up with a solution to that problem. They''ve engineered this oversized slider of B-Nut marine quality brass that lets you retrofit an aluminum mast mount to accept a standard mast base. Install this inexpensive little gem and you can get back with the mainstream.
Oversized Slider B-Nut
1 (800) 409-SNOW