Cheap And Discounts 16003 Hybrid Ceramic Bearing 17*35*8 mm 1PC Bicycle Bottom Brackets & Spares 16003RS Si3N4 Ball Bearings 16003-2RS Wholesale. Buy Directly From Merchant AutoParts Pro Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.