FindBuyTool best value SD-2 Ball Shape multifunction carbide grinding burr can do everything you need. This die grinder bit is simply awesome when grinding, shaping, milling and contouring on steel, stainless steel(INOX), Nickel-base alloy and other metals. Technical information Head Dia. 5/16 Head Length 5/16 Shank Dia. 1/4 OAL 2 Ideal HRC 54< Cut Double Cut Head Material Tungsten Carbide Shank Material Alloy Steel Machine Die Grinders Pneumatic Rotary Tools High Speed Engravers Application Steel Cast Iron Stainless Steel (INOX) Nickel-Based Alloys Titanium Alloys SHIPPING DIAMETER UNIT Pcs Package in Plastic BoxNet Weight 14.2Package Size 84 x 17 x 17mm