This 10 pcs electric polishing kits are for DIY polished engraving, cutting, polishing (wood, metal, mold polishing purposes). These are high quality 3x6mm tungsten steel carbide milling cutter for electric grinding accessories. Features: Our electric polishing kits has carbide rotary burrs, tungsten steel carbide milling cutter, grinding head and rotary burr cutting tool. Suitable for processing cast iron, cast steel, carbon steel, alloy steel, stainless steel, copper, aluminum and other metals, also marble, jade, bone etc. nonmetal. High working efficiency, perfect grinding effect and long using life. Basically replace with handle small grinding wheel, and no dust pollution. Convenient to grind, simple to use, safe and reliable. Specifications: Color: Silver Material: Tungsten Steel Work-hardness: HRA greater or equal to 85 Type: Rotary Burr Shank Diameter: 3mm or 0.12in Cutting Edge Diameter: 6mm or 0.24in Form: Cylindrical(A-type) Cylindrical Ball Head(C-type) Round Ball(D-Type) Oval(E-type) Arc-shaped Ball(F-type) Arc-shaped Spire(G-type) Torch(H-type) Cone round head(L-type) Conical Pointed(N-type) Inverted Cone-shaped(M-type) Item Weight: Approx. 48.3g or 1.7oz (10pcs) Package Size: Approx. 10 x 6.5 x 1.3cm or 3.9 x 2.6 x 0.5in Package Weight: Approx. 76.3g or 2.7oz NOTE: 1. When the cemented carbide rotary tool works on the pneumatic or electric tool, the rotate speed is usually 6000-40000 rpm, so you must clamp tight tool. 2. The cutting direction is from right to left even move, not like grinding wheel used for reciprocating cutting be careful not to overexert (pressure is generally less than 4 kg). Package List: 10 x Tungsten Steel Carbide Card Grinding