6 Pieces Titanium Coated Drill Bit Set 3pc Step Drill Bit 4-12mm 4-20mm 4-32mm 3pc Twist Drill Bit 3mm 6mm 8mm for DIY Plastic Wood Metal Aluminum Copper Drilling

Premium Material: Step drills are made of high-quality bearing steel, titanium-plated surface, anti-oxidation, no rust, wear-resistant, long service life., Unique Design: With three-sided shank and a two-flute cutting head, which allows for faster and smoother cutting, reducing the risk of chipping or splitting when drilling through hard materials., Time Saving: Cone drill has 29 different opening sizes: from 4 mm to 32 mm. you can drill or enlarge different holes with one drill bit without constantly changing bits, saving you a lot of trouble., What You Get: 1 x 4-12mm, 1 x 4-20mm, 1 x 4-32mm step drill bit, 3 x HSS twist drill bits, comes with a portable plastic box for easy storage and organization., Widely Use: These drill bit set can used to cut holes in a variety of materials such as panel, aluminum, insulation board, PVC board. It's suitable for household manual work and general construction.