Cheap And Discounts 27ER 27IR 10pcsLarge Pitch Paperback Threading Carbide Inserts 27 ER IR NR Q60 Q55 6.0 7.0 8.0 ISO TR 6.0ISO 7.0ISO 6.0TR 8.0TR Wholesale. Buy Directly From Merchant One CNC Tool Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.