BUCKLOS Brake Rotors Suitable for long-distance long-term use, and stable performance. Utilizing the cross-drilling technology, the lightweight system ensures heat dissipation when used at high strength.Easy to Mount on your Disc Brake Ready Frame and Fork. Brand: BUCKLOS Model:RT58 Product: Bicycle Disc Brake Rotor Material: Stainless Steel Size: 140/160/180/203mm Weight: About 92/120/152/194g Color:Black/Red/Blue/Purple/Silver •Wear & Corrosion-Resistant SUS410 Stainless Steel •Precision CNC One-Piece Cutting •Quenched & Hardened Martensitic Technology •Thickened High Strength Material Notice: Silver rotors no paper package.