CeramicSpeed bearings are handmade in Denmark and installed in aluminum cups made by European Rotor Components.
BSA Thread with 68 mm shell width fits for cranks with 24 mm axle like Shimano.
CeramicSpeed BB bearings are used by pro teams like Omega-Pharma - QuickStep, Astana and Team Saxo-Tinkoff and professional MTB team Superior-Brentjens.
Every single bearing is hand built in Denmark under clean room conditions. All parts are selected by hand for perfect fit, each bearing is spun by hand multiple times during the building process to ensure that all parts are matched perfectly.
CeramicSpeed balls are smoother, harder and lighter than the standard steel balls which are typically used in bicycle components.
CeramicSpeed offers 4 years warranty for standard and 6 years for coated products - please register within 30 days after purchase at ceramicspeed.com
Material: bracket cups: aluminum, bearings: stainless steel, ceramic balls
Weight supplement: manufacturer information