Cheap And Discounts 3.17mm Shank CNC Router Bits Kit for All Purpose, 40pcs Engraving Bits, Spiral End Mills, 2-Flute Flat Ball Nose End Millings Wholesale. Buy Directly From Merchant FoxAlien Official Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.