3PCS 3-12mm 4-12mm 4-20mm HSS Straight Groove Step Drill Bit Hexagonal Handle Titanium Coated Metal Core Drill Bit Set

Color: 3PCS With Bag
Sale price$12.86 USD

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DIY Supplies: Woodworking

Certification: CE

Type: Gun Drill Bit

Origin: CN(Origin)

Use: Metal Drilling

Model Number: Model Number

Material: Carbide

1: Step Drill Bit HSS Steel Cone Drill Bit Set Hole Cutter

2: Stepped Drill Bits 1/4 Hex Drill Bit Wood Metal Drilling Tool

3: Hss Step Cone Taper Drill Bit Hole Cutter Metal Hex Bits

4: 1/4" Step Cone Taper Drill Bit Set Metric Metal Hex Drill Bits

Use: Woodworking


  • 100% Brand New and High Quality
  • Made from high quality HSS steel
  • Ideal for using to cut holes in a variety of materials including steel, brass, wood, plastic, etc.
  • Titanium coated to reduce mit and heat
  • Heat treated and highly polished. Drills perfectly round holes in steel, brass, plastic, wood etc.
  • 3 sided shanks design in order to prevent slippage when in chuck
  • Two flute design drives faster, smoother and cleaner cuts each step is clearly labeled with the depth diameter in steps


Deburring, Chamfering, Cutting or expanding holes

Supporting tools: Pistol drill, Hand drill, Charging drill, Bench drill. (Water injection cooling while working, it can effectively extend the service life of the drill bit, especially in the case of continuous drilling)

Suitable material: Workpieces with general hardness, such as wood, plastic, PVC plate, iron plate, plate thickness within 3MM. Please note that stainless steel and spring steel are not applicable. Not for quenching. (Water injection cooling while working, it can effectively extend the service life of the drill bit, especially in the case of continuous drilling)

The Cutters Come in the Following Sizes:

  • 3-12mm(3mm,4mm,5mm,6mm,7mm,8mm,9mm,10mm,11mm,12mm) 10 Steps
  • 4-12mm: (4mm, 6mm, 8mm, 10mm, 12mm) 5 Steps
  • 4-20mm:( 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm)9 Steps


  • 3-12mm Length: Approx. 7.9cm/ 3.11"
  • 4-12mm Length: Approx. 6.7cm/ 2.64"
  • 4-20mm Length: Approx. 7.4cm/ 2.91"

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