Schaefer 8 Series Block 08-05

8 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 maintenance.