This high-performance 4 mm–32 mm step drill bit is engineered for multi-diameter drilling in sheet metal, aluminum, plastic, and thin steel. With graduated steps and a split-point tip, it eliminates bit changes and ensures precise, burr-free holes with minimal effort. Made from hardened HSS and finished with a black oxide or optional titanium coating, this bit offers durability and smooth drilling in both professional and DIY environments.
Key Features
Hole Size Range: 4 mm–32 mm across progressive steps—versatile for various mounting & conduit sizes
Material & Coating:
High-Speed Steel (HSS): tough and wear-resistant
Black Oxide Finish: reduces friction and resists corrosion
Optional Titanium Nitride (TiN) Coating: boosts longevity and heat resistance
Shank Type: 1/4″ hex or 8 mm round with 3-flat grip—fits drills or impact drivers securely
Tip Design: Self-starting split-point tip prevents walking and eliminates the need for a pilot hole
Flutes: Spiral flutes optimize chip clearance and drilling efficiency
Markings: Laser-etched step sizes—easy to read and reference