Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si 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, construction. Cutter diameter:0.47 inch/12mm Length of cut:1 inch/25mm Edge:Double Shape of Cutter: Cylindrical Warm Tips: your burr is inserted into your collet and clamped tightly. Please wear an eye mask to your eyes from filings. Please confirm the size you need to buy before purchasing. size: length 70mm Material:Cemented carbide colour:silver Package Contents: 1 * Cylinder Shape Burrs Tool Only the above package content, other products are not included. Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.