TOOGOO(R) Lot 100pcs 10mm 3/8" Survival Bracelets Curved Side Release Buckles High strength, lightweight, and have good physical, mechanical and chemical properties, especially tensile strength, flexural strength, fatigue strength, wear resistance and electrical properties are very excellent. Superior wear resistance and self-lubricating properties than the vast majority of engineering plastics. Good oil, peroxide-resistant properties, is often used in place of a variety of non-ferrous metals. Material: Plastic / POM (Polyoxymethylene) Accessories: buckle