Allen sheave boxes are available with either plain or ball bearings, a choice of sheave material, Acetal resin, pressure die cast high grade aluminium or high load stainless steel.
They are suitable for all types of halyard systems, control line systems and general running rigging. The Low profile range features Allen's unique hook-in cage designed to deal with high loads of modern rigs.
Working and breaking loads are very dependent on the fixing of the sheave box.
