Spiral Step Drill — high-speed steel, nitride-coated, triangle handle Why you need this tool Replace multiple twist bits with one spiral step drill that cuts a range of hole sizes in one pass, saving time and space in your toolbox. Nitride coating reduces friction and keeps the bit cooler under load, extending life and improving performance. No pilot or guide hole required; holes are automatically deburred as you drill, so parts are ready for immediate use. Key benefits and features Material: High Speed Steel (HSS) for durability and consistent cutting performance. Coating: Nitride finish reduces heat and friction for longer tool life and smoother drilling. Design: Spiral step geometry lets you drill multiple diameter steps with a single bit and creates cleaner, more controlled holes. Deburring: Built-in step profile removes burrs during drilling, reducing finish work. Handle: Triangle handle for secure grip and stable control while changing or storing the bit. Efficiency: One step drill can replace an entire set of individual drill bits for stepped hole sizes. Performance and compatibility Ideal for producing stepped holes quickly and repeatedly without changing bits. Performs well on sheet materials and common workshop substrates where step drills are typically used. Designed for use with standard drill chucks and hand or bench drills (confirm chuck size compatibility before use). Practical applications (examples) Electrical and conduit work: Quickly enlarge and create knockout holes in metal electrical boxes and panels. Metal fabrication and maintenance: Drill stepped access holes in sheet metal parts and enclosures while minimizing burrs. DIY and installation tasks: Create clean holes for grommets, wiring, and fitting components in cabinets, HVAC ducts, and appliance panels. Specifications Type: Spiral Step Drill Material: High Speed Steel (HSS) Coating: Nitride coated Handle: Triangle What you get A durable, multi-diameter step drill that reduces bit changes, deburrs holes automatically, and runs cooler under load — designed for faster, cleaner hole-making in a range of applications.