| 1.[Tungsten Grinder Bits]: These carbide Cutting burr, with 1/4 inch is made from Tungsten Carbide. Length:70mm, Cutting Diameter 1/2 inch, Length 45mm, Diameter 1/4 inch.For Bits Tool Accessories For , Fordom, , . 2.[DOUBLE CUT DESIGN]: The groove lines of these carbide burr's head are crossed, which makes it more suitable for materials with relatively low density, such as wooden, plastic and aluminum. 3.[Durable]: Hardness can reach to Less than HRC70, lasts long working life, sharp and durable. 4. [LONG WORKING LIFE]: The working life of these solid burr is 10 than high-speed steel and 200 than grinding . 5.[Usage]Carbide drill file is widely used in metal products, tool manufacturing, engineering,… | |