Description: Made of high quality alloy steel, durable and high strength Adjustable buckle for rock climbing harness seat belt Fits for 45mm/1.75" webbing Great accessories for rock climbing, floor escape, aerial work, rappelling, mountaineering etc Material: Alloy Steel Color: Black Big Buckle approx. 7.3*4.6*0.2cm Small Bucle approx. 5.7*3.1*0.2cm Slot Size: approx. 4.5*0.5cm / 1.75*0.2inch Breaking Force: 18KN Quantity: 2 Pairs ( 4 Pieces) Package Includes: 2 Pairs Safety Belt Buckle