Deluxe Optimist tiller extension, black anodized aluminium with a releasable rubber joint / swivel and long black eva foam grip. The joint incorporates a fibre core molded up in the centre. This fibre core will avoid complete failure should the rubber tear.
Sheaves running on Acetal or Torlon® ball bearings provide high performance & low friction. The 2-stage ball bearing system provides consistent performance over the full load range.Can be fitted with a shackle in either of two planes to allow correct alignment of the block.
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 feature Allen's unique hook-in cage designed to deal with high loads of modern rigs.
The A4808 High tension sheave block features a twist open facility for better access when changing halyards etc.