Key benefits Faster, more stable and smoother cutting for clean holes in thin materials Automatically chamfers the hole as you drill, delivering a clean entry and reducing postprocessing Coated to reduce friction and run cooler, effectively extending the drill bit life Built from heattreated speed steel with a nitride coating for durability and long service life What this is Step drill bits designed to provide multiple hole sizes with improved cutting efficiency Material: heattreated speed steel (HSS) Coating: nitride Why it matters Improves cutting performance in metals and other thin materials Reduces burrs and edge roughness with automatic chamfering Longer service life due to friction reduction and cooler operation Applications Drilling clean holes in metal sheets for electrical boxes, cabinets, or HVAC panels Deburring and chamfering entry holes during metal fabrication or sheet metal work DIY projects involving thin plastics or soft metals where multiple hole sizes are needed with a single bit set Notes Compatible with standard drill chucks for step drill bit use Designed to deliver consistent performance across multiple hole sizes within its stepped design