Single block with Stainless Steel cheeks and becket. Delrin(tm) sheaves ensure smooth operation and high safe working load. Removable becket allows for easy attachment of pre-spliced lines. Swivel head may be locked in place to eliminate twist. 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 12.7oz (360g), Max Line 1/2" (13mm)