HSS Step Drill Bit — 5 to 35 mm Key benefits Drill a range of hole sizes with one bit: reduces time spent changing bits and keeps job flow smooth. Titanium coating reduces friction and heat for longer bit life and more consistent cutting. Produces clean, precise holes that require minimal finishing. What it does and how it helps Functions as a stepped cutting bit to create progressively larger holes from 5 mm up to 35 mm using a single tool. Compatible with a standard drill — only a drill is required to cut different sized holes. Laser-etched size markings make it easy to stop at the exact diameter you need, improving accuracy and repeatability. Materials and performance Constructed from high quality HSS (high speed steel) for durability. Titanium-coated cutting surfaces lower heat buildup and reduce wear during use. Designed for clean cutting in a variety of materials: steel, brass, copper, wood, plastic, fiberglass and PVC. Practical applications (examples) Electrical work: cut clean knockout holes in metal junction boxes and electrical panels for conduit and cable entries. HVAC and plumbing: enlarge openings in sheet metal, copper, or PVC for pipe passages and fittings. DIY and fabrication: create mounting holes in metal brackets, plastic panels, or wooden housings without switching bits. Usage tips Use a drill with appropriate speed and steady pressure; back off as needed to clear chips. Start with a pilot point or center punch on thin metal for more accurate placement. Use cutting lubricant when drilling metals to further reduce heat and extend bit life. What's included One HSS step drill bit, laser-etched with sizes from 5 mm to 35 mm. Specifications Material: High speed steel (HSS) Coating: Titanium Size range: 5 mm — 35 mm Compatibility: Steel, brass, copper, wood, plastic, fiberglass, PVC This HSS step drill bit is built to simplify multi-size hole drilling while maintaining accuracy and reducing wear.