Cheap And Discounts 1-10PCS 0.5-6mm C7 Diamond Grinding Head Needle Bits Burrs Engraving Carving Tool 2.35/3mm Shank Grinding Bit Polishing Tool Wholesale. Buy Directly From Merchant GLHKDZ Fastener Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.