PF30 Shimano coated 46X68 road bottom bracket for Shimano, FSA, Rotor 24mm red For PF30 frame diameter 46, box width 68mm For 24mm axle 100% smoother and 15% harder than the ceramic competition. Average drag reduction of 75% compared to most BB´s Coated products: increase bearing ring hardness, avoid wear. Metallic layer 75% harder than hardened steel. Applied very thinly and evenly over the entire inner and outer surface Contents: 1 BB with bearings / 2 protective caps / 1 syringe 10ml of All Round grease / 1 sticker