Bosch 1/8"-1/2" Titanium-Coated Step Drill Bit

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The Bosch line of step drills offers the ability to drill up to 13 different size holes with a single bit. Step drill bits are ideal for electrical, plumbing and HVAC contractors. Titamium-coated step drill bits remain clean and accurate even in the toughest materials; superior durability that lasts up to six times longer life than high-speed steel.


  • Super-hard titanium coating lasts up to six times longer than high-speed steel
  • Self-starting point starts on contact
  • Balanced double flute eliminates chatter and vibration
  • Titanium reduces heat for longer life
  • Drills clean, accurate holes in these thin materials (up to 1/8 In.): sheet metal, ducts, steel, copper, brass, aluminum, plastic, plexiglass, wood, veneers, vinyl siding, plasterboard, PVC, stainless steel and cast iron


  • Application: All common drilling needs
  • Diameter: 1/8" to 1/2"
  • Flute Length: 2.0
  • Length: 3"
  • Number of Hole Sizes: 13
  • Shank Diameter: 0.25
  • Step Depth: 1/8"
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Product Name Bosch 1/8"-1/2" Titanium-Coated Step Drill Bit
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