Triple block with Stainless steel cheeks and delrin(tm) sheaves. Works with 705-98 for a powerful 6:1 purchase. Delrin(tm) sheaves ensure smooth operation and high safe working load. Swivel head may be locked in place to eliminate line twist. Sheave Dia. 2 3/8" (60mm), Thickness 2 29/32" (74mm), Width 2 1/2" (64mm), Length 5 1/32" (128mm), SWL 2250 lbs. (1020kg), Weight 1lb. 4oz (567g), Max Line 1/2" (13mm)