Ideal especially for the production of collars and harnesses for larger dogs, as well as outdoor equipment such as backpack buckles and belts. Fits Biothane straps with widths of 25 and 38 mm. Material: Zinc alloy with rose gold finish Breaking load: 17 mm - 80 kg; 20 mm - 150 kg; 25 mm - 230 kg; 38 mm - 250 kgNote: A 16 mm biothane or pawtex strap will NOT fit into the 17 mm size!