1. The lock body is made of iron, and the surface is galvanized for durability 2. The lock beam is made of steel, and the surface is chrome-plated to improve corrosion resistance 3. The lock core is made of high-strength, high-precision, rust-proof brass for durability 4. The outer cover is a rubber shell, which is strong and wear-resistant 5. The rubber base has a protective cover, which is waterproof and dustproof 6. It has high heat resistance 7. Material: metal + rubber cover 8. Weight: about 210g, about 217g
