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3pcs 3-12mm 4 -12mm 4-20mm HSS Step Drill Bit Set

3pcs 3-12mm 4 -12mm 4-20mm HSS Step Drill Bit Set

Regular price $10.00 CAD
Regular price Sale price $10.00 CAD
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Description:

HSS Titanium Electric Step Drill Bit Power Tool High-Speed Metal Drills Steel Wood Hole Cutter Cone Drill Woodworking Tools Set

Features:

  • 100% Brand New and High Quality
  • Crafted from high-quality HSS steel
  • Ideal for cutting holes in various materials including steel, brass, wood, plastic, etc.
  • Titanium coated to reduce friction and heat
  • Heat treated and highly polished, resulting in perfectly round holes in steel, brass, plastic, wood, etc.
  • Three-sided shank design prevents slippage when in chuck
  • Two-flute design provides faster, smoother, and cleaner cuts; each step is clearly labeled with the depth diameter in steps

Function:

  • Deburring, Chamfering, Cutting, or expanding holes
  • Compatible with Pistol drill, Hand drill, Charging drill, Bench drill. (Water injection cooling during operation effectively extends the drill bit's service life, especially during continuous drilling)

Rotating speed:

  • 3-12 speed: 260-400 RPM
  • 4-12 speed: 260-400 RPM
  • 4-20 Speed: 180-240 RPM

Attention:

  • The cutting resistance and linear velocity increase gradually due to the outer diameter expansion of each step of the step drill.
  • The step drill relies entirely on the inclined edge, which is only 1mm in length. Excessive feed speed during drilling may cause annealing due to edge abrasion.
  • Apply downward force when drilling; avoid pressing down too hard to prevent edge wear.

Suitable Materials:

  • Workpieces with general hardness such as wood, plastic, PVC plate, iron plate, with a thickness within 3MM. Please note that stainless steel and spring steel are not applicable. Not suitable for quenching.

Length:

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