• Ultra-hard material: The HSSCo step drill surface is coated with titanium nitride and aluminum, which improves the heat resistance and wear resistance of the step drill, improves the overall surface hardness of the drill, smoothness and brightness, and greatly improves the performance and service life of the drill. It is harder and sharper than ordinary steel step drills.
• Various hole diameters: 4-22mm in 10 steps, the diameter increases sequentially from small holes to large holes, so you can drill, enlarge, and modify holes of various sizes.
• Design advantage: Each step drill is engraved with millimeter precision, which can improve your work accuracy. Each step drill is pressed with millimeter precision to increase work precision. The double groove design of the hexagonal shaft makes the stair drill and drill more tightly coupled.
• Helical shape: Screw groove design reduces cutting pressure and improves waste removal conditions. Compared to a straight drill, it has superior durability and rotational stability, and has greatly improved waste removal and cooling efficiency. Spiral grooves prevent chips from getting entangled and causing scratches.
• Wide range of uses: Step drills are highly versatile. Suitable for drilling, enlarging, chamfering, deburring, etc. in wood, industrial use, professional use, home DIY, thin iron plates, vinyl, stainless steel, aluminum wood, FRP, resin, etc. A staple item for home and work. Additionally, chamfering can be done at the same time as drilling, which saves time.
No-delivery refund
