Cheap And Discounts YSNC MIR MIL Boring Tool Small Diameter Inner Hole Groove Knife CNC Tool Holder Alloy Tungsten Steel Internal Hole Groove Knife Wholesale. Buy Directly From Merchant Shop1104861295 Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.