Lathe Bore Grooving Turning Tool Carbide Small Hole Tool Grooving Insert 1.5wide Mainly used for small hole diameter slotting turning processing. The shank is made of high quality spring steel, heat-treated and finished. Shock-resistant and durable, not easy to deform, nickel-plated surface treatment, anti-corrosion. Shank diameter 16 mm, overall length 115 mm The blades are made of tungsten carbide and processed by professional 5-axis tool grinding machine. The surface is coated with specialized physical coating technology. Resistant to abrasion and high temperature. It can be used to process carbon steel, cast steel and stainless steel. MG-H1630-09R  1PCS MB09GR150-40  10PCS