Cervélo Lower Bearing 1-1/8"The CeramicSpeed Headset Bearing 1-1/8" is compatible with CervéloThe Bearing has the following specifications:30,15x41x7 mm, 36/45 degreesThis product comes in two variants, with our CeramicSpeed Standard Ceramic Bearings and with our Coated Bearings. The Coated Bearings offer an even longer lifetime and lower friction. Learn more about the coated advantage.RELATED TECHNICAL INFORMATION:Headset specifications: 30,15x41x7 mm, 36/45 degrees