Cheap And Discounts 16IR 1.0 ISO 1.25 1.5 1.75 2.0 2.5 3.0 22IR 3.5 4.0 4.5 5.0 Thread turning tools Tungsten Carbide Insert Threading Wholesale. Buy Directly From Merchant CDWAS Tool Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.