SD03A, 1/8”-1/2” TiAIN Coated Step Drill Bit, 1/4" Hex Shank, Four Sprial Flute M35 Cobalt Step Drill Bits Set, 3PCS, for Metal, Stainless Steel, Aluminum, Copper, Wood, PVC

Premium Quality: TiALN coating and M35 cobalt construction exhibit excellent characteristics, including high hardness, high oxidation temperature, strong adhesion, and a low friction coefficient.

Four Spiral Flute: A step drill with four spiral flutes can provide a better surface finish because it has more cutting edges. It also excels in stability when drilling harder materials, making it effortless to drill holes in stainless steel, cast iron, alloy, PVC, various types of wood, and plastics.

Effortless Efficiency: Equipped with a 1/4” hex shank for easy installation in impact drivers, these bits ensure stability and quick changes, ideal for diverse applications from home repairs to professional projects.

Versatile Range: Covering sizes from 1/8”- 1/2”, 1/4”- 3/4”, 3/16”- 1/2”, this set of three bits caters to varied drilling needs without the hassle of frequent changes, optimizing workflow and saving valuable time.

Reliable Precision: Crafted for reliability and precision, these drill bits offer unmatched performance for DIY enthusiasts and professionals across construction, engineering, and repair tasks.