Single block with anodized aluminum cheeks and becket. Removable becket allows use or pre-spliced line for easy installation. Delrin(tm) sheave ensures smooth operation and high strength. Swivel head may be locked in place to eliminate twists. Sheave Dia. 2 3/8" (60mm), Thickness 1 3/32" (28mm), Width 2 1/2" (64mm), Length 6 9/32" (160mm), SWL 2250 lbs. (1020kg), Weight 9.0 oz (255g), Max Line 1/2" (13mm)