Cheap And Discounts NEW NBJ16 Micro Universal Boring Head Set with BT40 Shank Adjustable Boring Bar Cutters for Milling Machine with 6-51mm Boring Wholesale. Buy Directly From Merchant Shop1103208031 Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.