40MM SINGLE BLOCK

A20401-77– 40mm Dynamic Single Swivel Block with Ball Bearing Cam Cleat | High-Performance Block for Keelboats & Dinghies

New for 2023, the A20401-77 40mm Dynamic Single Swivel Block with Ball Bearing Cam Cleat is built from high-strength, lightweight glass-loaded nylon and combines Allen's renowned dynamic bearing technology to deliver a high-performance block perfectly suited for keelboats and dinghies.

Ideal for use on main, jib and spinnaker sheets on dinghies, as well as keelboat control lines, the A20401-77 brings together smooth bearing performance and an integrated adjustable cam cleat for the ultimate all-in-one deck solution.

Patented Bearing System – Dynamic Block Technology Dynamic Blocks feature an exclusive patented bearing system using twin rows of stainless-steel ball bearings running on a stainless-steel rail. The ball bearings are caged for further friction reduction, delivering superior load-carrying capacity and outstanding longevity compared to conventional bearing systems on the market.

Swivel Head – 360° Rotation with Rated 4mm Shackle The block features a 360-degree swivel head fitted with a 4mm shackle that is load rated higher than the block itself — compact but more than strong enough for demanding conditions.

Adjustable Cam Cleat – Precision Positioning Made Easy The integrated A.77 small aluminium cam cleat is mounted on an adjustable stainless-steel arm. To reposition, simply loosen the central nut and bolt, pop out the side plates slightly, and move the arm to the desired angle. Push the side plates back and tighten the nut and bolt to lock in the perfect position.