1PC 1/4" Shank 12mm Flute Diameter Rotary Files Tungsten Carbide Double Cut Rotary Burr 8mm-32mm Blade Length Dremel Rotary Tool Features: Can Process a variety of metal and non-metal, processing hardness would up to HRC70. Can replace the petiole small wheel, and no dust pollution. High product processing quality, high finish, can process out a various of high-precision mold cavity. Long life, the durability is 10 times higher than high-speed steel cutting tool, 200 times higher than small grinding wheel. Easy to use, safe and reliable, can reduce labor intensity, improve the working environment. Suitable for processing these metal and non-metal, such as cast iron, cast steel, bearing steel, high carbon steel, chrome-nickel alloy, bronze, brass, and ceramic tile, marble, jade, bone, etc. Uses: Finishing all kinds of metal molds. Cleaning trimming,veining and weld joint of casting, forging and weldment. Carving all kinds of metal and non- metal. A variety of mechanical parts chamfer, round and groove processing. Inner hole surface of machinery parts finishing. Note: Mainly used in the pneumatic or electric-driven tools, the speed is generally in 6000-50000 rev/min, clip positively while using, milling cutting mode is better, avoids reciprocating cutting. Specifications: Material: Tungsten carbide Shank diameter: 6mm(1/4") Hardness: can up to HRC70 Model Length Blade diameter Blade length Net Weight 001 E1220 66mm 12mm 19mm Approx. 45g 002 H1232 77mm 12mm 32mm Approx. 54g 003 L1228 73mm 12mm 28mm Approx. 39g 004 K1208 53mm 12mm 8mm Approx. 27g 005 D1210 55mm 12mm 10mm Approx. 27g 006 G1225 70mm 12mm 25mm Approx. 38g 007 A1225 70mm 12mm 25mm Approx. 48g 008 C1225 70mm 12mm 25mm Approx. 49g 009 F1225 70mm 12mm 25mm Approx. 41g 010 N1213 58mm 12mm 13mm Approx. 30g 011 M1225 70mm 12mm 25mm Approx. 33g Package Included: 1Piece 1/4" Tungsten Carbide Burr 6.35mm Double Grain Rotary Cutter File.