BUCKLOS Bike Rotor ModelA: Brand: BUCKLOS Product: Bicycle Disc Brake Rotor Material: Stainless Steel Size: 140/160/180/203mm Weight: About 128/158/198/242g Package Included:1PC Rotor+6 Bolts Feature: Wear & Corrosion-Resistant SUS410 Stainless Steel Precision CNC One-Piece Cutting Quenched & Hardened Martensitic Technology Thickened High Strength Material BUCKLOS Bike Rotor ModelB: Brand:BUCKLOS Product:Bike Disc Brake Rotor Model:G3CS Material:Stainless Steel Size:160MM/180MM/203MM Color:Black/Red/Blue/Purple/Yellow/Green Weight:160MM:About 94±5g 180MM:About 132±5g 203MM:About 180±5g Thickness:About 1.8mm Screw:Free 6pcs T25 Scrrew Torque:6.2 N.m Package Included:1PC Rotor+6 Bolts BUCKLOS Bike Rotor ModelA: without cardboard box packaging .