Cheap And Discounts 16IR 11.5NPT 14NPT 18NPT LDA/LDC 16ER 11.5NPT 14NPT LDA/LDC Carbide CNC Threaded lathe turning inserts for cast iron processing Wholesale. Buy Directly From Merchant ND lathe tool Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.