Allen 50mm Quad Block Apparel & Personal Gear Bearings - Dynamic Blocks feature

Bearings - Dynamic Blocks feature our patented bearing system which uses twin rows of stainless-steel ball bearings running on a stainless-steel rail

Mainsheet Jammer (Block Not Included)

This block is Laser class legal

This provides a superior load-carrying ability and longevity when compared to other bearing systems available on the market

Pressed shackle

Allen 50mm Quad Block Apparel & Personal Gear Bearings - Dynamic Blocks featureAllen 50mm Quad Dynamic Block. The A2056 is a high performing ball bearing block, designed to eliminate friction and allow rope to run at great speeds. Ideal for use on Keelboats and Catamarans for a range of applications from jib sheet to mainsheet systems, to backstay tensioning systems and everything in between. The 50mm quad is a great choice for systems which require a larger purchase system with minimal friction. Bearings: Dynamic Blocks feature