20mm High Load Block with swivel hook

High load blocks feature a stainless-steel sheave. This upgrade offers even faster rolling speeds, higher working loads and lower friction when compared to the standard acetal sheave.

The stainless-steel sheave allows the block to be paired with both rope and wire.

Ideal for use in higher loaded applications in dinghies, windsurfing, kitesurfing and anything else that runs smaller diameter lines. 

Swivel Hook – A built-in swivelling hook allows this block to be easily attached or removed as well as swivel to aline with pulling forces that may change direction. The swivel cannot be locked.

Bearings – Dynamic Blocks feature Allen's patented bearing system which uses twin rows of stainless-steel ball bearings running on a stainless-steel rail. This provides a superior load-carrying ability and longevity when compared to other bearing systems which run on a plastic rail.

Becket – Allen's 20 & 30mm blocks offer a large central rivet which not only reduces the overall weight but also offers a rope friendly attachment, perfect as a tie-off point when being used in a cascade system.