High-Speed Steel (HSS) step drill with spiral and straight flutes — designed for reliable hole-making in metal and wood. It combines stepped drilling capability with a quickchange shank and a triangular/hexagonal profile for secure seating and easy tool swaps. Key benefits One tool, multiple hole sizes: step design lets you drill a range of diameters without changing bits, saving time and reducing setup. Durable cutting: HSS construction maintains edge strength for repeated use in both metal and wood applications. Efficient chip evacuation: combined spiral and straight flutes clear chips consistently to reduce clogging and improve cutting performance. Fast tool changes: quickchange shank simplifies swapping bits and minimizes downtime on the job. Stable fit: triangular and hexagonal shape provides positive engagement in compatible holders and quick-change systems. Features Material: High-Speed Steel (HSS) for wear resistance and thermal stability. Flute design: Spiral and straight flutes for balanced cutting and chip control across materials. Form: Triangular and hexagonal shape/profile as supplied. Shank: Quickchange shank for rapid replacement and compatibility with quick-change chucks and holders. Function: Step drill format for producing and enlarging holes in successive diameters. Performance and compatibility Effective for drilling and enlarging holes in a wide variety of metals (sheet metal, thin plate) and wood. Works with standard quick-change systems and compatible chucks that accept triangular/hexagonal shanks. Suitable for use in handheld drills, drill presses, and quick-change-ready drivers when proper holders are used. Practical use scenarios Electrical and HVAC installation: rapidly create multiple outlet and conduit hole sizes in sheet metal panels without changing bits. Metal fabrication and maintenance: enlarge existing holes or punch stepped holes in thin metal parts during assembly or repair. Carpentry and cabinetry: cut stepped holes and countersinks in wood for fittings, bushings, or fastener clearance. Usage tips Use steady feed and appropriate drilling speed for the material; reduce speed and use cutting fluid when working with metals. Clear chips periodically for best performance, especially when drilling deeper steps. Ensure the quickchange holder or chuck is rated for the triangular/hexagonal shank profile before use. This HSS step drill is a practical, durable tool for professionals and hobbyists who need versatile, fast hole-making across metal and wood with quick, secure tool changes.