10 Series Single Block with Stainless Steel cheeks and Aluminum 'universal circuit' ball bearing sheave. Aluminum sheave run on Delrin(tm) ball bearings for a very strong yet low-friction sheave. Stainless Steel D shackle run on a swivel head that may be locked in plate to avoid line twist. Bolted construction allows for easy maintainence.

Our Part # SCH1005UC | Schaefer Part # 10-05-UC