These ceramic cups are for Campagnolo Over-Torque cranksets and frames have a BB30 recording.
The deep groove ball bearings with USB (Ultra Smooth Bearings - ceramics) guarantee due to the absolutely smooth surfaces and thus lower friction extreme ease. Comparative tests have shown that the USB bearing are 50% smoother than standard bearings. When developing lightweight, reducing energy loss and increased corrosion resistance were not disregarded.
Bottom bracket standard: BB30 with 68 mm x 42 mm (width x Einpressmaß)
compatible cranksets Campagnolo Over-Torque
Stock: bearings of ceramic
Material Shell: Technopolymer
Weight: 54g (manufacturer)