A bottom bracket built to outlast your frame. BB ALPHA features hardened stainless-steel races hand-built with grade-3 Silicon Nitride ceramic balls, custom-engineered seals and precision dust covers, delivering up to 500% better moisture protection, while still providing ultra-low friction performance. The simplified spacer tube design and lighter cups ensure quick installation and a 10% weight reduction over previous generations.Precisely pair a crankset with a 30mm axle of adequate length with a threaded T47 frame that is 85-86mm wide with bearings placed inboard by selecting this high quality bottom bracket from CeramicSpeed. Specifications:- Net weight: 86.0 g- Gross Weight: 205 g- BB Type: T47 86mm- Crank Diameter: 30.0- Crank Brand: SRAM, Easton, FSA, Rotor, Cannondale, and Race FaceIn the box:- BB ALPHA for T47/86 30mm Road- Spacer Kit- UFO All Round Grease 5 ml- Decal