Technical Specifications

• Material: M2 High-Speed Steel (HSS)

• Shank: 3/8" Hex (impact-driver compatible)

• Step Count: 11 graduated sizes

• Step Range: 3/16" → 1-3/8" diameter

• Step Depth: 3/16" per level

• Point Angle: 135° self-centering split point

Step Progression

1. 3/16" (4.8mm)

2. 1/4" (6.4mm)

3. 3/8" (9.5mm)

4. 1/2" (12.7mm)

5. 5/8" (15.9mm)

6. 3/4" (19.1mm)

7. 7/8" (22.2mm)

8. 1" (25.4mm)

9. 1-1/8" (28.6mm)

10. 1-1/4" (31.8mm)

11. 1-3/8" (34.9mm)

Key Features

✔ No Pilot Hole Needed: Self-starting tip
✔ Jam-Free Design: Double-flute chip evacuation
✔ Precision Control: Count steps or use washer as depth stop
✔ Industrial Durability: M2 HSS stays sharper longer than carbon steel
✔ Included: Protective storage case

Material Compatibility

• Metals:
  ✓ Steel (up to 1/8" thick)
  ✓ Stainless (sink-grade)
  ✓ Aluminum/copper

• Non-Metals:
  ✓ Plastic laminates
  ✓ PVC/fiberglass

Professional Applications

• Electrical: Enlarging knockouts in panels/J-boxes

• HVAC: Ductwork modifications

• Automotive: Body repair & fabrication

• Construction: Metal stud framing

• Plumbing: Sink & appliance installs

Usage Tips

• Speed: 1,500-3,000 RPM for cleanest cuts

• Lubrication: Use cutting oil for stainless steel

• Technique: Apply steady pressure - let the steps do the work