6-Piece HSS Titanium Step Drill Set, 4 12 mm Step Cone Drill bits, high-Speed Steel Twist Drill bits for DIY Plastic, Wood, Metal, Aluminum, Copper, Cone Drill, Metal Drill, conical Drill

 ✅Spiral Flute Design: Step drill allows for faster, more stable and smoother cutting. It can automatically bevel the hole to clean the drill bit.
✅Widely Use: This drill is suitable for sheet metal, sink, car repair. And widely used to cut holes in a variety of materials such as panel, aluminum, insulation board, PVC board.
✅Time saving: Our cone drill has 29 different opening sizes: from 4 mm to 32 mm. Covering different increment sizes helps to drill or enlarge different holes in one drill bit without constantly changing bits, saving you a lot of trouble.
✅High Speed ​​Steel: The step cone drills are made of high speed steel, and the titanium nitride coating can reduce friction heat and run cooler. Strong and durable.
✅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 without worrying about falls to have to do.