These ceramic cups are for Campagnolo's Over-Torque cranks have a BB30 recording and for frames.
The deep groove ball bearings with USB (Ultra Smooth Bearings - ceramic) guarantee due to the absolutely smooth surfaces and thus lower friction extreme ease. Comparative tests have shown that the USB bearings are 50% smoother than standard bearings. In the development of light weight, reduce energy loss and increased corrosion resistance were not ignored.
Braquet Standard: BB30 68 mm x 42 mm (width x press-fit dimension)
compatible cranks : Campagnolo Over-Torque
Stock: bearings of ceramic
Material shell: Techno Polymer
Weight: 54g (manufacturer)