The Sram CenterLine design provides a smooth, consistent, and quiet running braking surface. Rounded edges make for easier wheel installs and are UCI-compliant.Main features:Rounded edges are UCI-compliant and allow for easier wheel installs.Compatible with both road and mountain bike brakes.Features:Model: RT-CLN-A2.Weight: --- g.Materials: Stainless steel.Rotor type: CenterLine.Locking type: Center Lock. Sram Lockring included.References:00.5018.037.037: Sram CenterLine Rotor, RT-CLN-A2, Center Lock, 160 mm, Rounded (includes internal tooled lockring).00.5018.037.038: Sram CenterLine Rotor, RT-CLN-A2, Center Lock, 180 mm, Rounded (includes external tooled lockring).00.5018.037.039: Sram CenterLine Rotor, RT-CLN-A2, Center Lock, 200 mm, Rounded (includes external tooled lockring).