Cheap And Discounts V Shape Flat Bottom Carbide PCB Engraving Bits 3.175mm Sharp Knife CNC Router Bit 10/15/20/30 Degree Carving Milling Cutter Tool Wholesale. Buy Directly From Merchant XJX Tool & Equipment Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.