Cheap And Discounts Sirona MCX5 Dental Milling Burs for Grinding PMMA NC Coating Shank D3 Drill Diameter 0.5/1.0/2.5mm 47mm Dental Lab Grinding Tool Wholesale. Buy Directly From Merchant Shop1102926224 Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.