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KJE 3PCS SAE 1/8" to 1-1/8" M35 Cobalt Step Drill Bit Set, 1/4" Hex Shank Metal Cutting Unibit Step Drill Bits(TiAlN Coated), Spiral Cone Drill for Stainless Steel, Sheet Metal, Wood & Plastic

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Product details

Management number 216554564 Release Date 2026/04/19 List Price $15.96 Model Number 216554564
Category

Step Drill Bit Set (SAE 1/8" to 1-1/8")

  • 【3-Pc Spiral Flute Step Drill Bit Set - Widest Range! 1/8" to 1-1/8" Coverage】: Most 3-pc step drill sets max out at 7/8". Our set features 3 bits drilling 29 precise hole sizes, from fine 1/8" (3.175mm) up to a powerful 1-1/8" (28.575mm). Set includes 3 precision-ground step bits providing 29 standard hole diameters:6-Size Bit: 3/16", 1/4", 5/16" , 3/8", 7/16", 1/2"; 10-Size Bit: 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1", 1-1/8"; 13-Size Bit: 1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32", 1/2". Tackle diverse drilling tasks with one set – save time and hassle!
  • 【Premium Build: Industrial M35 Cobalt Steel & TiAlN Coating】: Made from high-performance M35 Cobalt HSS (ISI M35/1.3243/SKH55/M35), offering superior wear resistance, pressure tolerance & sinter resistance – powers through tough materials like stainless steel. The TiAlN coating (AlTiN) boasts extreme hardness (~3800HV), high heat resistance (up to 800°C oxidation temp), and low friction, dramatically extending bit life and ensuring smoother, faster drilling.
  • 【4 Spiral Flutes: Unbeatable Stability & 2X Life】: Stop the flex! The unique 4-flute design delivers exceptional rigidity and stability for greater precision and speed. Superior chip clearance minimizes jams and heat build-up. Excel at stainless steel drilling. Lasts up to 2X longer than standard step drills!
  • 【Optimized Cutting Angles & Pro Cooling Tip】: Engineered cutting angles reduce self-wear. Pro Tip: Bits heat up during continuous high-speed drilling. Using cutting fluid or coolant spray is highly recommended for effective cooling, maximizing bit lifespan.
  • 【Superior Performance】: KJE Step Bits feature jam-free performance: The dual-flute design delivers up to 2X faster drilling, 4X longer life, and 50% more holes per bit vs competitors! Ideal for stainless steel, aluminum, wood, and plastic sheet (thinner than step height). Industrial-grade reliability for professionals and DIYers.
Model Step Drill Bit Set
Brand Name KJE
Shank Type Hex
Unit Count 3.0 Count
Finish Types Titanium Aluminum Nitride
Manufacturer KJE
Material Type Cobalt High-Speed Steel
Tool Flute Type Spiral
Number of Flutes 4
Included Components 3PCS Step Drill Bit Set,1PC storage bag,1PC transparent plastic box
Surface Recommendation Titanium Aluminum Nitride

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