Cheap And Discounts LY 10PCS 3.175mm Diameters CNC Milling Drill PCB Bits Kit 0.1mm - 2mm Metal Cutter CNC Tools For Circuit Board Beeswax Engraving Wholesale. Buy Directly From Merchant LYCNC Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.