Four Spiral Flute Step Drill Bit Set, 1/8"-1-3/8" 5PCS High-Speed Steel Unibit Step Bits with 1/4" and 3/8" Hex Shank for Stainless Steel Metal Aluminum Wood Plastic
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Special Features
Effortless Precision Drilling: Engineered with four razor-sharp cutting blades, our step drill bit set delivers swift, vibration-free drilling performance. The advanced geometry slices through steel, aluminum, copper and other rigid materials with surgical precision - like a hot knife through butter
Durable High-Speed Steel: Forged from premium high-speed steel (HSS), each bit achieves Rockwell 62-65 hardness for exceptional durability. This industrial-grade composition resists thermal fatigue while maintaining cutting efficiency even under extreme pressure and friction
5 Pcs Step Drill: The comprehensive set covers 90% of common metalworking applications with graduated diameters: 3/16"-1/2" (6 steps), 1/4"-3/4" (9 steps), 3/16"-7/8" (12 steps),1/8"-1/2" (13 steps), 3/16"-1-3/8" (19 steps)
Easy Organization & Identification: Our step drill bits for metal come with a handy storage case, ensuring effortless organization and portability for all your drilling tasks. Clear size markings on each bit allow for quick identification
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