ITEM NAME:2pcsHalf-round Bearing Router Bit 8mm Shank Bullnose Router Set 12.7/19.05mm Description: C3 Micro-grain Tungsten Car.Shank: 8mm/ 0.315". Solid Hardened Steel Bodies with Anti-Kickback design. High precision, smooth cutting, special impact resistance and good wear resistance. Build-up & Heat Resistant polytef coating.