ZELCAN Step Drill Bit Set, 5PCS Four Spiral Flute Step Bits for Metal, 50 Sizes Titanium-Coated HSS Drill Bits with 1/4" Hex Shank for Stainless Steel Aluminum Wood Plastic

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Handle Drilling Tasks with Ease: With four sharp cutting blades, ZELCAN's step drill bit set ensures swift, smooth drilling, effortlessly cutting through steel, aluminum, copper, and other tough materials like a hot knife through butter! Titanium-Coated HSS Build: Crafted from robust high-speed steel with a titanium coating, our drill bits ensure superior hardness for faster cutting through harder materials while withstanding high temperatures and cutting forces, ensuring lasting performance. 50 Sizes Comprehensive Drill Bit Set: Our 5-piece step bit set caters to diverse drilling needs, with diameters ranging from 3/16" to 1/2" (6 steps), 1/8" to 1/2" (13 steps), 1/4" to 3/4" (9 steps), 3/16" to 7/8" (12 steps), and 1/4" to 1-3/8" (10 steps). Quick Release & Tapered Edge Design: The 1/4" hex shank and quick-release slot ensure secure connections and easy changes. The four-spiral flute design effectively evacuates chips from the hole, reducing the likelihood of clogging and improving drilling efficiency. 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.