6-piece HSS step drill set designed for durability and consistent performance High-speed steel (HSS) construction for wear resistance and long service life Six versatile cone/step drills cover a range of hole sizes so you can drill progressively larger openings with a single bit Step design delivers controlled, precise hole sizes without changing bits, reducing setup time and tool changes Compatible with standard corded and cordless drills for use across job sites and home shops Suitable for metal, wood and plastic — one set handles multiple materials and common tasks Key benefits — why you need this set Saves time: drill several hole diameters with one tool instead of swapping many bits Reliable results: HSS material holds an edge and takes moderate heat, giving cleaner holes over repeated use Versatile: works on thin sheet metal, plywood, plastics and other common materials found in DIY and professional work Space- and cost-efficient: fewer bits to store and replace Performance and usage notes Use moderate drill speed and steady pressure; apply cutting fluid or lubricant when drilling thicker or harder metals Fits most drill chucks; use a keyed or keyless chuck rated for the required RPM The stepped flute geometry helps guide the bit and produces progressively larger apertures with reduced wandering Practical applications Electrical and HVAC: create accurate knockout holes in junction boxes, conduit fittings and sheet metal panels Home improvement and cabinetry: enlarge openings for hardware, handles, pipes and cables in wood and plastic panels Workshop and fabrication: quickly size holes for rivets, grommets and wire pass-throughs in thin metal or composite parts What’s included Six HSS step drills covering a range of incremental hole sizes (one bit replaces multiple standard bits) Ready for DIY, repair work and professional workshop use Straightforward, durable and multi-material capable — this 6-piece HSS step drill set is designed to simplify drilling tasks that require multiple hole sizes while maintaining reliable performance.