Cheap And Discounts HIgh Speed RPM R188ZZ ABEC-9 10PCS 6.35X12.7X4.76 mm Miniature Bearings R188 ZZ R188Z Wholesale. Buy Directly From Merchant FlyLeopard Ball Bearing Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.