Antal 150mm Composite Fibre Halyard Block
features anodized 3571 TA16 light alloy construction, recessed screws and pins,
smoothed edges, sheaves on composite fibre bearings and double self-captive
Delrin ball thrust bearings. The sheaves are easy to dismantle for cleaning
and require no lubrication, and the steel coupling can be easily locked
into one of two main positions.