Step Drill Bits – Multi-Step, Sheet Metal (4–30mm)

Step drill bits drill and enlarge clean, accurately-sized holes in sheet metal and plastic — a stepped cone where each step is a set diameter, so one bit gives you a whole range of exact hole sizes and deburrs as it cuts.

How they work
Self-starting point, then stepped diameters — stop at the step you need for a precise hole, no pilot required.

Ranges
Three bits cover 4–12mm, 4–20mm and 6–30mm, with 6mm, 8mm and 9mm shanks.

Uses
Drilling and enlarging holes in sheet steel, aluminium, brass, plastic and laminate — ideal for electrical, panel and sheet-metal work.

For a continuous size range rather than set steps, see our cone (taper) drills.

Choose your bit above — sold singly.

Also known as step drills, multi-step drills, cone step drills, step cone bits or sheet metal drills.