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

Handle drilling tasks with ease: Featuring four sharp cutting blades, this step drill bit set ensures swift, smooth drilling, effortlessly cutting through steel, aluminum, copper, and other tough materials.
Titanium-coated HSS construction: Made from robust high-speed steel with a titanium coating, these drill bits provide superior hardness for faster cutting through harder materials while withstanding high temperatures and cutting forces. 50 sizes comprehensive drill bit set: This 5-piece step bit set caters to various 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 removes chips from the hole, reducing the likelihood of clogging and improving drilling efficiency.
Easy organization & identification: These step drill bits for metal come with a convenient storage case, ensuring effortless organization and portability. Clear size markings on each bit allow for quick identification