Allen Optimist Sprit Block Apparel & Personal Gear This provides a superior load-carrying

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

and durability over the acetal sheave range

High Load Sheave‚ By utilising a stainless-steel sheave with a slight V shape profile offers the ability to be paired with both wire and Dyneema

The counterweight also stops the Aerovane from “flapping” side to side in strong winds

Allen Optimist Sprit Block Apparel & Personal Gear This provides a superior load-carryingAllen Optimist Sprit Block. Featuring a ball bearing sheave which has been shaped to work with dyneema or wire. The flat side of the block is specially designed to sit against the mast of an optimist to stop any twisting, allowing the block to give the best lead for the sprit line and making it as easy as possible for the sailor to use whilst on the water. This Optimist hook will fit all Optimist masts and is 100% class legal.