Step Drill Bit - 1pcs Hex Handle Spiral Groove Step Cone Drill Bit Cobalt Steel Hole Cutter(4-12mm)

Titanium coated handle, reducing friction and heat Made of high speed steel, hard, wear resistant and durable Unique step structure allows different sizes of holes to be opened Compared to ordinary twist drill bit, not easy to break Ideal for drilling holes in a variety of materials, including steel, bronze, aluminum and more Description: The spiral groove cone drill bit is made from high quality high speed steel with titanium coating for reduce friction and heat, which is used for cutting thin iron plate, aluminum material, insulation plate, PVC plate and more. The unique step structure allows different hole sizes to be opened.Specifications:Material: HSS4241+cobaltSurface treatment: titanium platingHandle shape: hexagonalHandle diameter: approx. 6.35mm/0.25inFeatures:1. Made of high speed steel, hard, wear resistant and durable.2.Titanium coated handle, reducing friction and heat.3. The unique step structure allows different sizes of holes to be opened.4. Compared with ordinary twist drill, not easy to break.5. Ideal for drilling holes in a variety of materials including steel, bronze, aluminum and more. Sold by Bianco FR Store