Take your metalworking projects to the next level with this premium #4 step drill bit. Featuring 12 precisely engineered steps ranging from 3/16 inch to 7/8 inch, this versatile tool allows you to drill multiple hole sizes with a single bit. The black oxide finish provides enhanced durability and heat resistance during operation. This jam-free design helps prevent material buildup, ensuring smooth and efficient drilling through metal surfaces. The stepped design offers up to 4x longer life compared to standard drill bits, making it a cost-effective choice for professional and DIY applications. Each step is clearly marked for easy size identification, allowing for precise hole sizing every time. Made in the USA, this robust step drill bit is ideal for sheet metal work, electrical installations, HVAC projects, and general fabrication tasks where multiple hole sizes are needed. The single-piece construction eliminates the need for multiple drill bits, saving both time and storage space in your toolbox.