About This

SUIT YOUR NEEDS: 9-step sizes include 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4". The 135° cutting angle reduces self-wear and provides a larger stress area, resulting in cleaner, more efficient drilling for home repairs, and metalworking.
IMPROVED Stability: Four cutting blades are designed for increased stability, effectively reducing deviation during the cutting process. It offers a significantly longer service life compared to regular step drills.
M35 Cobalt Material: M35 cobalt high-speed steel, through heat treatment, achieves toughness and bending strength that surpasses standard high-speed steel, making this step drill bit more suitable for cutting hard materials.
AlTiN Coating: With 89HRC surface hardness, the step bits coated with aluminum titanium nitride. This coating offers superior resistance to heat, wear, and corrosion, with high adhesion and low friction.
Widely Application: With its powerful drilling capability, our step drill is suitable for piercing holes in various materials, including thin metal, copper, aluminum, iron, carbon steel, wood, and plastic.