Turning-Tool Threading Holder - 3pcs Internal Thread Boring Bars SNR0008K11+SNR0010K11+SNR0012M11 with 3pcs Indexable Carbide Inserts 11IR A60 Golden 【1】Package : 3pcs internal thread boring bars SNR0008K11+SNR0010K11+SNR0012M11, 3pcs turning carbide inserts 11IR A60, 3pcs T8 wrenches 【2】Material Specification : The lathe threading tool is made of 42CrMo steel which with high hardness and is very wearable, also have strong toughness and low-temperature impact resistance 【3】Process Performance : (a) Free forging, ultra heat treatment with 1060 degrees celsius, with excellent mechanical performance on strength, hardness, fatigue strength, etc. (b) Colorfast with laser surface treatment. (c) Fine and shiny for cutter body, good chip removal, high effectiveness with no cutting break benefit by its diamond composite polishing, mirror grinding on blade. (d) Precise assembly with clamping screw brings agile cutting 【4】Application and Storing : CNC cutting tool for metal and non-metallic materials difficult to machine processing. Cost-Effective due to wide application for many kinds of equipment, process .That's easy to store with single package for boring bar and threading inserts 【5】After-sales Service : Any questions, please contact us anytime, we'll quickly response to service for you. We offer FREE EXCHANGE for dissatisfaction