ASNOMY 5PCS Double Cut Carbide Rotary Burrs Set - 1/4 Inch Shank 10MM Head Die Grinder Bits Solid Carbide Rotary Burr File Set for Die Grinder Drill, Metal Carving,Polishing,Engraving,Drilling

Feature: 1) Material: Tungsten steel Hard Carbide 2) Cutter pattern: double cut 3) Suitable for: Drilling, Metal Craving,Engraving, Polishing 4) Dimension: 6*10mm / 1/4*3/8 inch (Approx.) 5) Suggested RPM:25000-50000, Max RPM 70000. 6) Machining hardness reach to HRC70. 7) Quantity: 5pcs/Set in Separate box Product specification & Details: Material: Tungsten Carbide Cutting Dia.: 10mm Shank Dia.: 6mm Package: 1* 5 Pieces Rotary Burr Set 1 * Storage Bag Note: There may be tiny chromatic aberration between the pictures with the products