Another manufacturing masterpiece from Wheels ManufacturingThese high quality machine shells with Stainless bearings enable you to pedal faster for longerExternal bottom bracket shellsMachined aluminiumcups contain pre-installed high-grade 5 stainless steel bearings, allowing the cranks to spin more freelyFits both Shimano and Race Face systemsLaser etching on the casing denotes brand, and installation directionReplacement seals and bearingsavailable for quick in-store bottom bracket servicingBritish Standard ThreadsWeight: 95 grams