<p>Product Description.</p> <p>[Tag Drill Bit Sizes]:5-35mm (5mm, 7mm, 10mm, 12mm, 15mm, 17mm, 20mm, 22mm, 25mm, 27mm, 30mm, 32mm, 35mm). A wide range of drill bits to meet your different needs, saving you time and money.</p> <p>[Quality Material]: These tag drill bits are made of heat-treated 4241 high-speed steel (HSS) and coated with titanium nitride. Titanium coating reduces friction and lowers operating temperature, effectively extending the service life.</p> <p>[Trapzodal design]: This drill can drill holes of different sizes, eliminating the need to purcse multiple drills, saving space and money.</p> <p>[Double groove]: Automatic burr when drilling. Faster and smoother cutting. Three flat ndles ensure a secure hold. Triangular ndle: Easy to use with screwdrivers, drills and pressure drills.</p> <p>[Scope of application]: The tagged drill bit set can be used for workpieces with a rdness of less tn 25 and a thickness of less tn 5mm. They are suitable for a wide range of materials such as carbon steel, iron sheet, insulation board, PVC board, wood board and wood. They also allow existing holes to be enlarged and are not recommended for stainless steel.</p>