6Pcs Titanium Hex Step Drill Bit Set 4-12/20/32Mm Metal Hole Cutter Wood Cone Core Drilling Hole Saw Tool+Saw Drills
- Step drill is hexagonal handle, prevent sliping. The saw drill is a round handle.X shaped openings, drilling is not easy to slip. Higher precision, more sharp, burr-free drilling.The gold is titanium coating, more wear and oxidation resistance, not rust.The unique step structure, a drill can drill a variety of sizes of the aperture. You can deburring, chamfering, punching elliptical hole.The hardness of the workpiece below the use of 25 ° below, such as iron, aluminum, PVC board, insulation board, wood, workpiece thickness 4mm.
