2PC 6808 Hybrid Ceramic Bearing 40x52x7 mm ABEC-7 Bicycle Bottom Brackets & Spares 6808RS Si3N4 Ball Bearings

High-concerned chemical：None isCustomized：Yes Material：Chrome Steel GCr15 Model Number：6808-2RS CB Origin：Mainland China Certification：NONE Bearing Material：Chrome Steel GCr15 Ball Material：Ceramic Si3N4 Bearing Sizes：40*52*7mm Bearing Grade：ABEC-7 Inner Diameter：45 mm Out Diameter：52 mm Width：7 mm Lubrication：Greased Bearing Type：Ball Bearing Application：Bicycle ball bearing Bearing Characteristics：Running Smooth

High-concerned chemical: None isCustomized: Yes Material: Chrome Steel GCr15 Model Number: 6808-2RS CB Origin: Mainland China Certification: NONE Bearing Material: Chrome Steel GCr15 Ball Material: Ceramic Si3N4 Bearing Sizes: 40*52*7mm Bearing Grade: ABEC-7 Out Diameter: 52 mm Width: 7 mm Lubrication: Greased Application: Bicycle ball bearing Bearing Characteristics: Running Smooth