Product Discription: Brand: BUCKLOS Product: Bicycle Disc Brake Rotor Material: Stainless Steel Package includes :2 pcs 160mm rotors + 12 Bolts Weight: About 158g/1pc Feature: Wear & Corrosion-Resistant SUS410 Stainless Steel Precision CNC One-Piece Cutting Quenched & Hardened Martensitic Technology Thickened High Strength Material.