Four Spiral Flute Step Drill Bit Set - 1/8"-1-3/8" 5PCS HSS Unibits with 1/4" and 3/8" Quick-Change Hex Shank and Storage Case, for Metal, Wood, Electrical Installation, Auto Repair & Home Use

★★★★★ 4.8 139 reviews

US$11.20
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Management number 218148931 Release Date 2026/05/03 List Price US$11.20 Model Number 218148931
Category
  • Drill Clean Holes in Metal, Fast & Effortless: Cuts through steel like a hot knife through butter. Four flutes reduce heat build-up and prevent grabbing for smoother control vs. 2-flute bits. Essential for electricians drilling panels (up to 5mm) and fabricators. Use with cutting oil for peak performance
  • One Kit Does It All - From Small Pilot to Large Holes: Covers 90% of drilling tasks with 5 bits ranging from 3/16"-1/2" (6 steps), 1/4"-3/4" (9), 3/16"-7/8" (12), 1/8"-1/2" (13), to 3/16"-1-3/8" (19). Start from a precise 4mm pilot, then seamlessly step up for conduit or hardware. Ideal for metal, wood, plastic—use lower speed on soft materials to to prevent over-drilling
  • Swap Bits in Seconds & Drill with Precision: This step drill bit set includes universal 1/4" and 3/8" hex shank to fit your drill or impact driver. It locks securely and enables mechanics to swap bits in tight spaces like under a vehicle without fumbling for tools. Paired with tough, laser-etched markings that resist oil and wear, ensuring reliable, repeatable accuracy on the job
  • Tackle Truck Frames & Tough Jobs with Confidence: Built with reinforced shanks to handle the demands of drilling through common automotive metals like body panels, brackets, and exhaust components. The balanced geometry reduces "walking" and vibration, making it ideal for installing accessories, performing repairs, or custom fabrication on vehicles. A go-to tool for automotive technicians, serious DIYers and garage enthusiasts-just avoid drilling into high-strength steel frames, axles, or hardened materials
  • Stays Sharper Longer & Stays Organized: Made of high‑speed steel (HSS) hardened to resist wear, so it maintains its edge through prolonged use. The rugged, compartmentalized case keeps every bit secure and ready, whether you’re on a construction site, in a home garage, or a professional workshop

Set Name Four Spiral Flute Step Drill Bit Set
Brand Name Keovoker
Shank Type Hex
Unit Count 1.0 Count
Part Number SDB001
Finish Types Uncoated
Manufacturer Keovoker
Material Type High Speed Steel (HSS)
Tool Flute Type Spiral
Number of Flutes 4
Number of Pieces 5
Included Components Step Drill Bit Set
Surface Recommendation Metal, Plastic, Wood

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