· UV resistant Acetal disc.
· Double ball bearing system runs on a polished stainless rail and acetal base, providing minimum weight and great strength.
· Aluminum disc versions use Torlon® balls.
· 316 stainless steel swivel.
· Fiber-reinforced and UV-resistant nylon block.
· The cleaning holes in the ball bearings make it easy to rinse salt and sand out of the balls to ensure a long and functionally safe service life of the blocks.
