Cheap And Discounts 10Pcs 0.8~5mm C7 Inverted Trapezoid Diamond Burr Grinding Engraving Bit 2.35/3mm Shank Polishing Head for Dremel Rotary Tools Wholesale. Buy Directly From Merchant Chongsu-Spring Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.