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Spiral Flute Step Drill Bit Set, 5 Pcs HSS Step Drill Bits Unibit Step Drill Bit


  • 🎯 【Stable Four-Flute Cutting】 Four-flute step drill bit construction helps reduce deflection during cutting for better accuracy and cutting speed, including when drilling stainless steel.

  • 🛠️ 【Industrial Grade Alloy Steel】 Built from high-quality alloy steel through multiple manufacturing processes, with each bit inspected at the factory for dependable durability and longer working life.

  • 📏 【Laser Engraved Step Sizes】 Clearly laser-engraved size markings remain easy to see during use, helping you select the right step quickly and drill with greater confidence.

  • 🔩 【Multi-Material Hole Drilling】 Designed for piercing holes in thin metal, copper, aluminum, iron, carbon steel, wood, and plastic for DIY repairs and household projects.

  • 🧰 【Five Useful Bit Ranges】 The 5-piece nitriding step bit kit covers five diameter ranges and arrives in a sturdy blow molded case for organized storage and transport.

Specifications:

  • Product Type: Spiral flute step drill bit set

  • Quantity: 5 pieces

  • Material: High-quality alloy steel

  • Finish: Nitriding

  • Flute Design: Four-flute step drill bit

  • Drilling Range 1: 3/16 in. to 1/2 in. (6 steps)

  • Drilling Range 2: 1/8 in. to 1/2 in. (13 steps)

  • Drilling Range 3: 1/4 in. to 3/4 in. (9 steps)

  • Drilling Range 4: 3/16 in. to 7/8 in. (12 steps)

  • Drilling Range 5: 3/16 in. to 1-3/8 in. (19 steps)

  • Suitable Materials: Thin metal, copper, aluminum, iron, carbon steel, wood, and plastic

  • Step Markings: Laser-engraved sizes

  • Storage Case: Sturdy blow molded case

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  •  Features & Tips
  • The four-flute design delivers improved stability to help reduce cutting deflection for more accurate, faster drilling.
  • Check the laser-engraved size markings before drilling and stop at the step that matches the hole diameter needed for your project.
 

Stable Cutting Control

Ordinary step drills can deflect while cutting, which can make hole placement less accurate and slow down the job. This set uses a four-flute step drill bit design to improve stability during drilling. The added control is especially useful when working with stainless steel, where accuracy matters. For DIY tasks and general shop work, that stability helps create cleaner, more confidently sized holes with less interruption.


Built For Durability

These industrial-grade step drill bits are made from high-quality alloy steel and undergo multiple manufacturing processes. Each bit is inspected at the factory to support consistent quality and longevity. The construction is intended to provide a longer service life than regular step drills, making this set a practical choice for repeated drilling tasks. Keep the case nearby between jobs to store the bits together and protect your tool organization.


Versatile Material Use

Keep this step drill bit set on hand for a wide range of hole-making jobs around the home or workshop. It is suitable for thin metal, copper, aluminum, iron, carbon steel, wood, and plastic. That versatility makes it useful when a project involves more than one material or when you need a compact alternative to keeping many individual drill sizes within reach. Use the visible step markings to choose the target diameter.


Five Bit Size Ranges

The 5-piece nitriding step bit kit provides a selection of drilling ranges for different hole sizes. Included ranges are 3/16 inch to 1/2 inch with 6 steps, 1/8 inch to 1/2 inch with 13 steps, 1/4 inch to 3/4 inch with 9 steps, 3/16 inch to 7/8 inch with 12 steps, and 3/16 inch to 1-3/8 inch with 19 steps. A sturdy blow molded case keeps the set organized for storage and transport.





Package includes:

  • 1 x Spiral Flute Step Drill Bit Set, 5 Pcs HSS Step Drill Bits Unibit Step Drill Bit

Shipping Information:

  • Your item Ships Same Day to 1 Business Day from our Location.