About This

• SUIT YOUR NEEDS: The 12 total step sizes include 3/16",1/4", 5/16", 3/8", 1/2", 9/16", 5/8", 11/16", 13/16", and 7/8". 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. Step bits coated with aluminum titanium nitride. This coating offers superior resistance to heat, wear, and corrosion, with high adhesion and low friction.
• Wide 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.

Overview

• Cutting Diameter : 0.88 Inches
• Finish Type : Titanium Aluminum Nitride
• Shank Type : Hex
• Brand : Witwocky
• Tool Flute Type : Spiral