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A professional 3-piece step drill bit set covering small to large hole sizes (3mm to 32mm). Made from heat-treated HSS with titanium coating, this set provides clean, burr-free holes in sheet metal, plastic, and wood—ideal for electrical, plumbing, automotive, and DIY projects.
Brand: HARDEN
Model: 614143
Type: Step Drill Bit Set (3 Pieces)
Material: High-Speed Steel (HSS), Heat-Treated
Coating: Titanium Nitride (TiN) – Reduces Friction, Increases Life
Shank: Hex Shank (Secure Grip in Chuck)
Application: Sheet Metal, Plastic, Wood, Aluminum
Small: 3–12mm Step Drill
Steps: 3, 4, 5, 6, 7, 8, 9, 10, 11, 12mm
Ideal for electrical knockouts, small pipes, and thin materials.
Medium: 4–20mm Step Drill
Steps: 4, 6, 8, 10, 12, 14, 16, 18, 20mm
Versatile for HVAC, plumbing, and general fabrication.
Large: 4–32mm Step Drill
Steps: 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32mm
Suitable for large holes in panels, ducts, and enclosures.
Titanium Coating – reduces heat, prevents corrosion, and extends bit life.
Heat-Treated HSS – ensures durability and maintains sharpness.
Hex Shank Design – prevents slipping in drill chucks for safe operation.
Gradual Step Design – creates clean, precise holes with minimal burring.
Complete Size Range – covers 3mm to 32mm for various applications.
Time & Cost Efficient – replaces multiple drill bits with one set.
Perfect for:
Electrical box and conduit holes
Plumbing pipe installations
Automotive sheet metal work
HVAC duct and vent holes
DIY metal/wood/plastic fabrication
Appliance repair and modification
General workshop and home projects
Step Drill Bit Set, Unibit Set, Titanium Coated Drill Bits, Hole Enlargement Set, Metal Drilling Tools, HARDEN Tools, Sheet Metal Drill Set, 614143
#Tags
#HARDEN #StepDrillSet #UnibitSet #TitaniumCoated #MetalDrilling #DIYTools #614143 #DrillBitSet #SheetMetalTools
A professional 3-piece step drill bit set covering small to large hole sizes (3mm to 32mm). Made from heat-treated HSS with titanium coating, this set provides clean, burr-free holes in sheet metal, plastic, and wood—ideal for electrical, plumbing, automotive, and DIY projects.
Brand: HARDEN
Model: 614143
Type: Step Drill Bit Set (3 Pieces)
Material: High-Speed Steel (HSS), Heat-Treated
Coating: Titanium Nitride (TiN) – Reduces Friction, Increases Life
Shank: Hex Shank (Secure Grip in Chuck)
Application: Sheet Metal, Plastic, Wood, Aluminum
Small: 3–12mm Step Drill
Steps: 3, 4, 5, 6, 7, 8, 9, 10, 11, 12mm
Ideal for electrical knockouts, small pipes, and thin materials.
Medium: 4–20mm Step Drill
Steps: 4, 6, 8, 10, 12, 14, 16, 18, 20mm
Versatile for HVAC, plumbing, and general fabrication.
Large: 4–32mm Step Drill
Steps: 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32mm
Suitable for large holes in panels, ducts, and enclosures.
Titanium Coating – reduces heat, prevents corrosion, and extends bit life.
Heat-Treated HSS – ensures durability and maintains sharpness.
Hex Shank Design – prevents slipping in drill chucks for safe operation.
Gradual Step Design – creates clean, precise holes with minimal burring.
Complete Size Range – covers 3mm to 32mm for various applications.
Time & Cost Efficient – replaces multiple drill bits with one set.
Perfect for:
Electrical box and conduit holes
Plumbing pipe installations
Automotive sheet metal work
HVAC duct and vent holes
DIY metal/wood/plastic fabrication
Appliance repair and modification
General workshop and home projects
Step Drill Bit Set, Unibit Set, Titanium Coated Drill Bits, Hole Enlargement Set, Metal Drilling Tools, HARDEN Tools, Sheet Metal Drill Set, 614143
#Tags
#HARDEN #StepDrillSet #UnibitSet #TitaniumCoated #MetalDrilling #DIYTools #614143 #DrillBitSet #SheetMetalTools