Allen Sheave Boxes are available with a plain bearing or ball bearing sheave. We also have the following choice of sheave material to suit your application: Acetal Resin, Stainless Steel and Alloy.

Sheave boxes are suitable for all types of halyard systems, control line systems and general running rigging.

The low profile range of sheave boxes features Allen's unique hook-in cage; designed to deal with the high loads of modern rigs.