Viadana 57mm Single Ball Bearing Strengthened Cheek Block, 91.63 Sheave Size_57 mm Ball bearings are made from

Ball bearings are made from engineered plastic in fitted ball races

There is no need to worry about it accidentally coming loose due to vibration

This round pad eye comes with a white delrin® mounting base which can be used

The one-piece solid aluminum construction is lightweight and strong

Sail type Code zero

Viadana 57mm Single Ball Bearing Strengthened Cheek Block, 91.63 Sheave Size_57 mm Ball bearings are made fromIntroducing our premium Mainsheet System, designed to elevate your sailing experience with precision and durability. Backed by a manufacturer's two year warranty, this system is built to withstand the rigors of the open water. Upgrade your sailing rig with our Mainsheet System and experience the perfect blend of performance, reliability, and ease of use on the water. We appreciate your patience with this product, please allow 2 3 weeks for