These triglide slides are made of iron, with nickel plated on the surface, sturdy and durable, not easy to get rust or erosion, allowing you to apply for a long time WIDE RANGE OF USAGE - This kind of buckle is widely applied in your daily life, such as webbing, fasteners strap, dog collar harness, nylon webbing, camping bag belt, suitcase, backpack, sports equipment, pet products, etc.