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