Transform your drilling experience with this professional-grade M2 HSS step drill bit. Featuring nine precisely marked sizes from 1/4" to 3/4", this versatile tool eliminates the need for multiple drill bits. The high-speed steel construction, enhanced with superior tungsten and molybdenum content, delivers exceptional durability and cutting performance. The polished steps with clearly visible size markings allow continuous drilling without interruption for size checks. Its double-fluted design and quick-change 1/4" hex shank ensure compatibility with impact-ready power tools for efficient bit switches. This robust step bit excels at creating clean holes in various materials including stainless steel (up to 12ga/2.7mm thickness), mild steel, galvanized steel, aluminum, copper, plastic, and wood. The specialized heat treatment and surface hardening optimize the bit's performance, making it an essential addition to any professional or DIY toolkit.