Double block with becket and Stainless Steel cheeks. Works with 705-25 for a 4:1 purchase. Delrin(tm) sheaves ensure smooth operation with high safe working loads. Removable becket allows use of pre-spliced lines. Swivel head may be locked in place to resist twists. Sheave Dia. 2 3/8″ (60mm), Thickness 2″ (51mm), Width 2 1/2″ (64mm), Length 7 3/32″ (180mm), SWL 2250 lbs. (1020kg), Weight 1lb. 3oz. (538g), Max Line 1/2″ (13mm)