Step Drill,Knoweasy 3Pcs HSS(6542) Step Drill Bit Set,4-12mm/4-20mm/4-32mm Drill Bits Set,Used for Drilling Plate Aluminum Metal Wood Hole, Large Hole Drill Suitable for DIY Lovers

✅【Titanium Coating:】Coated by titanium,this step drill set performs well in heat,corrosion and rust resistance. ✅【Hexagonal Design :】The hexagonal shank titanium drill uses a double-edged design to make cutting smoother and smoother. High-step design allows you to stop and don't drill big!. ✅【Multi-function:】4-12mm / 4-20mm / 4-32mm, Handle: 1/4" quick-change hex shank for drilling,drill holes of different sizes. ✅【Application:】Perfect for home repairs and light jobs such as drilling holes in plastic,aluminum,copper,iron sheet and many other types of sheet metal (excluding steel or any other harder metal. ✅【Product Guarantee:】Your customer satisfaction and 12 months warranty of step drill kit can be guaranteed.