Hybrid Ceramics bearing * 2pcs
Bearing Material: PA66 Nylon
Ball Material: Nitrided Silicon Ceramic SI3N4
Enclosure: 2 Rubber Seals
With Bearings Cover×2pc & Wavy Washer
Fit with BB30/BB30A/BB Right/BB386 EVO Frame with 30mm axle Crankset: Sram/FSA/Rotor