Diseà ±ados para funcionar con BB30 pedalieres 100% Mecanizado-CNC, 7075 aluminum Juntas laberinto para evitar que los rodamientos se ensucien Diseà ±ados para funcionar con ROTOR y juegos de bielas Shimano 24mm; " With this bottm bracket, a crank with 24 mm axle can be driven in a frame with bb30 mount; product featuresmaterial: aluminiumbearing: ceramicsuitable for axle diameter: 24mminner diameter: 42mmcompatible with: ´mtb bb30 frame width 73/68mmcolorredweight198gscope of delivery1 x bb30 to 24 mm ceramic bottom bracket.