Cheap And Discounts 123410 Non-standard Ball Bearings ( 1 PC ) Inner Diameter 12 mm Outer Diameter 34 mm Thickness 10 mm Bearing 12*34*10 mm Wholesale. Buy Directly From Merchant AutoParts Pro Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.