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EZARC 3-Piece Step Drill Bit Set 1/4 Hex Shank M35 Cobalt Variable Step Drill Bit

by EZARC

EZARC 3-Piece Step Drill Bit Set 1/4 Inch Hex Shank M35 Cobalt — EZVB3PC

The EZARC EZVB3PC Step Drill Bit Set delivers three precision-engineered step bits covering a wide range of hole sizes in a single compact case. Built from M35 cobalt high-speed steel with AlTiN coating, these bits are engineered for cutting metal, stainless steel, aluminum, and plastic with speed, accuracy, and long-lasting durability. The C-profile triple-flute design reduces deviation during cutting and enables smoother, faster hole-making compared to standard step bits.

  • Brand: EZARC
  • Part Number / SKU: EZVB3PC
  • Included Bits: 3-piece set
  • Shank: 1/4 Inch Hex
  • Size Ranges:
    • Bit 1: 1/4 Inch – 3/4 Inch (9 holes)
    • Bit 2: 3/16 Inch – 7/8 Inch (12 holes)
    • Bit 3: 1/8 Inch – 1/2 Inch (13 holes)
  • Steel: M35 Cobalt High-Speed Steel (HSS-Co)
  • Coating: AlTiN (Aluminum Titanium Nitride) — 89 HRC hardness
  • Flute Design: Triple-flute C-profile cutting edge
  • Application: Metal sheet (up to 1/8 Inch / 3mm), stainless steel sheet (up to 1mm), aluminum, plastic
  • Included: Compact carrying case

Key Features:

  • C-Profile Design: Triple-flute geometry increases stability, reduces deviation during cutting, and delivers smoother cuts at higher speeds.
  • M35 HSS Cobalt Steel: Through heat treatment, achieves superior toughness and bending strength over standard HSS — purpose-built for hard materials.
  • AlTiN Coating: Rated at 89 HRC for exceptional hardness, thermal resistance, and low friction. Superior resistance to heat, wear, and corrosion.
  • 3-Piece Set: Neatly organized in a compact case for easy transport and storage. Spiral flutes and stepped design allow efficient drilling through various material thicknesses.

Note: Suitable for metal sheet up to 1/8 Inch (3 mm) thick and stainless steel sheet up to 1 mm thick. Apply cutting oil or coolant during continuous operation. Due to larger cutting angles, startup speed may be slower.

Available Variants:

  • (1) Set
  • 12 Pack

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