5-piece titanium-plated high-speed steel (HSS) step drill bit set that includes an automatic center punch. Material: Titanium-coated High-Speed Steel (HSS) for durability and reduced friction. Sizes: Includes various stepped sizes ranging from 1/8 inch to 1-3/8 inches. Features: Designed for drilling precise holes in metal, wood, and plastic without needing to frequently change bits. Inclusions: Comes with a storage case to hold the bits and the center punch.