Cheap And Discounts 10pcs 16ER 1.0 1.25/1.5/2.0/3.0/3.5 BP1025 high quality internal turning tool carbide insert for Threading tool boring blade Wholesale. Buy Directly From Merchant JHSK. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.