Product Details: Brand: ROCKBROS Material: High–Strength Alloy Steel + Zinc Alloy Lock Core + Silicone Jacket Model: RKS626 Steel Diameter: About 1 Lock Body Diameter: About 2 Weight: About 805g 3 Keys Features: 1 Thicken The Lock Body 2 Double Opening Anti–Theft three Silicone Protection 4 Waterproof And Rust–Proof five Shear Resistance