EXTRACUT 3-Piece HSS Step Drill Bit Set three complementary step drills covering the most common hole-enlarging and deburring tasks in sheet metal, plastic, and thin steel. TiN-coated high-speed steel with a 1/4" hex shank provides clean, burr-free stepped holes and works in drills and impact drivers alike.
Key Features
- 3-Step Drill Coverage — Three bits provide a continuous diameter range for holes in sheet metal, plastic, and thin steel.
- TiN-Coated HSS — Titanium nitride coating reduces friction and extends life versus bright HSS.
- Burr-Free Holes — Stepped geometry cuts clean holes and deburrs in a single pass.
- 1/4" Hex Shank — Fits standard drills and impact drivers and resists slipping in the chuck.
- Dual-Flute Option — Two cutting edges improve chip evacuation and hole roundness.
- Laser-Etched Sizes — Diameter markings on each step allow quick size identification.
Applications
Sheet metal fabrication, electrical panel and enclosure work, HVAC ducting, plastic and acrylic drilling, and deburring holes in thin steel and aluminum.
Specifications
| Specification |
Value |
| Set Contents |
3 × TiN Step Drill Bits |
| Material |
HSS + TiN Coating |
| Shank |
1/4" Hex (6.35mm) |
| Range (Bit A) |
Ø4 – 20mm (approx 12 steps) |
| Range (Bit B) |
Ø4 – 32mm (approx 10 steps) |
| Range (Bit C) |
Ø6 – 40mm (approx 9 steps) |
| Material Thickness |
Up to 4mm steel / 8mm aluminum |
| Impact Rated |
Yes (hex shank) |
| Coolant |
Optional (dry OK) |
| Best For |
Sheet Metal, Plastic, Thin Steel |
