Replacement bearing kits for Campagnolo Ultra-Torque bottom brackets.These are supplied in three qualities:* CULT (Ceramic Ultimate Level Technology) are Hybrid Ceramic bearings for use with all Ultra-Torque cups.* USB (Ultra Smooth Bearings) are Hybrid Ceramic bearings for use with all Ultra-Torque cups.* Steel, for use with all Ultra-Torque cups.Please note: You can upgrade your Ultra-Torque bottom bracket to either Hybrid Ceramic option.