Step Drill Bit,Knoweasy HSS(6542) Titanium Coated Spiral Grooved Step Drill 3-Piece Set,4-12mm/4-20mm/4-32mm Drill Bits Set for Sheet Metal Hole Drilling

✅【High Quality Material:】HSS 4241 & classic high speed steel with titanium coating for strength and longevity. ✅【 Double-edged Design:】The hexagonal shank titanium drill uses a double-edged design to make cutting smoother and smoother. ✅【 Product Feature:】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. ✅【After Sales Warranty:】Your customer satisfaction and 12 months warranty of step drill bit can be guaranteed.