Fiddle block with side shackle and becket. Works with 02-43 for a 4:1 purchase. Delrin(tm) sheaves on plain bearings ensure smooth operation and high safe working load. Length 4-7/8"(124mm), Width 1-7/8" (48mm), Thickness 15/32" (12mm), Weight 3 oz, (85g), Safe Working load 900 lbs (410kg)