Cheap And Discounts 6305 Full Ceramic Bearing ( 1 PC ) 25*62*17 mm Si3N4 Material 6305CE All Silicon Nitride Ceramic Ball Bearings Wholesale. Buy Directly From Merchant FUSHI Official Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.