Step & Cone Drill Bits – for Sheet Metal & Plastic

Step and cone drill bits drill and enlarge clean, round holes in sheet metal, plastic and other thin material — each bit covers a range of sizes and deburrs the hole as it goes, so a single drill does the work of a whole set.

Two types
Cone (taper) drills have a smooth cone for any size across their range; step drills have distinct steps for precise, set diameters.

Uses
Enlarging holes and knockouts in electrical enclosures, panels, trunking, sheet metal and plastic.

Also known as step drills, cone drills, taper drills, sheet metal drills or hole enlarging bits.