Single Stainless Steel Block - 60mm SheaveDelrin™ sheave ensures low-friction and high safe working load. Swivel head may be locked in place to eliminate line twist. Specifications:Sheave Dia. 2 3/8" (60mm)Thickness 1 3/32" (28mm)Width 2 1/2" (64mm)Length 5 1/32" (128mm)SWL 2250 lbs. (1020kg)Weight 10.2oz (289g)Max. Line 1/2" (13mm)