10pcs Double Cut Tungsten Carbide Rotary Files Diamond Burrs Set 3mm Shank Milling Cutter Engraving Bits Fits Rotary Tool for Grinder Drill, DIY Woodworking Carving, Metal Polishing, Drilling

Features: [1] Made of heat-treated carbide which can lasts long working life, sharp and durable. high abrasion resistance, good toughness. [2] Tungsten steel grinding head is widely used in industrial sectors such as machinery, aviation, automobile, shipbuilding, chemical engineering and process engraving. [3] Processing all kinds of metal(including all sorts of hardened steel) and non-metal (such as marble, jade, bone), and the machining hardness can reach to HRC70. [4] Generally use with handheld electric or pneumatic tool drive (can also be used in machine tool). The speed of the electric or pneumatic tools usually is 6000-50000 revolutions per minute. [5] Double cut head. suitable for deburring and polishing cast iron, cast steel, carbon steel, alloy steel, stainless steel and other materials. excellent for fine detail work, cutting, engraving, carving, touch-up and finishing. Specification: Material: Tungsten Carbide Steel Use: Rotary Burr Shaft Diameter: 3mm Drill Bit Size: 6mm Hardness: Can Up to HRC70 Weight: About 80g Package Included: 10 x Tungsten Steel Carbide Rotary Burrs Drill Set Notes: 1. Size for manual measurement, there may be a 1 to 3 mm error, belongs to the normal phenomenon. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!