Allen 50 mm Triple Block Sails & Dinghy Covers Use a set of circlip

Use a set of circlip pliers to tighten each part into itself

as it keeps the line load pulling the side cheeks together

Aluminium through deck bushes are available in a choice of 6 colours

This gives our Tii-On range maximum strength and reliability with minimal cheek separation when tied on and loaded up with a soft shackle

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

Allen 50 mm Triple Block Sails & Dinghy Covers Use a set of circlipAllen 50mm Triple Dynamic Block. The A2054 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 triple is a great choice for systems which require a larger purchase system with minimal friction. Bearings: Dynamic Blocks