CeramicSpeed PF30 Bottom Bracket Description: With an integrated dust cover for all models, a snug & secure fit that also fully protects the face of the bearing delivers exceptional performance without any sacrifices. CeramicSpeed hand-built bearings carry the load from crank to frame with un-paralleled durability & efficiency. Features: Save watts and ride faster with guaranteed lowest friction, optimized power transfer, and longest product lifetime PF30 bottom bracket standard Coated Bearings: metallic layer that covers bearing races making them 75% harder than steel. Even lower friction and highly resistant to corrosion In the box: 2 cups, 2 dust covers, 10mm syringe of All Round Grease, and sticker sheet Specifications: Frame Interface: PF30 Spindle Interface: SRAM DUB (28.99mm) Bottom Bracket Shell ID: 46 Shell Width: 68mm Color: Black Weight: -