If you need to grind down some weld beads or do some porting work, FindBuyTool SF-5L6 Tree Radius End grinding burr will satisfy your expectatation. Our finest rotary burs are designed to fit most air or electric tools like die grinder, pneumatic rotary tool and high speed engraver. Technical information Head Dia. 1/2 Head Length 1 Shank Dia. 1/4 OAL 6 Ideal HRC 54< Cut Double Cut Head Material Tungsten Carbide Shank Material Alloy Steel Machine Die Grinders Pneumatic Rotary Tools High Speed Engravers Applications Steel Cast Iron Stainless Steel (INOX) Nickel-Based Alloys Titanium Alloys SHIPPING DIAMETER UNIT Pcs Package in Plastic Box Package Size 84 x 17 x 17mm