EZARC Step Drill Bit for Metal — M35 Cobalt, AlTiN Coating, 1/4in Hex Shank (1/4in-3/4in)

EZARC Step Drill Bit for Metal: Precision, Durability, Versatility

Meet EZARC's three-flute, C-profile step drill bit, designed to stabilize drilling in metal, stainless steel, and plastics. The combination of a stable entry and a smoother cutting edge helps you achieve clean, consistent holes with less effort on the jobsite.

Built around a tough M35 cobalt core, this bit enhances toughness and bending strength for cutting through harder materials. The result is a tool you can rely on when the material thickness or hardness challenges a standard bit.

The AlTiN coating adds wear resistance and superior heat management. With this coating, each cut runs cooler and more smoothly, helping edge life and reducing friction across repeated holes in demanding projects.

Nine-step versatility in one bit

Designed with nine distinct steps, the bit lets you drill multiple hole sizes without swapping tools. The stepped sequence covers common diameters from 1/4 inch up to 3/4 inch, letting you expand capabilities in a single bit.

• Steps include 1/4in, 5/16in, 3/8in, 7/16in, 1/2in, 9/16in, 5/8in, 11/16in, 3/4in
• Spiral flute geometry enhances chip clearance and reduces cutting wander

Please note the following guidelines to optimize results and tool life:

• Material thickness: suitable for metal sheets up to 1/8in (3 mm) and stainless sheets up to 1 mm
• Use cutting oil or coolant during continuous operation to manage heat and wear
• Startup may be slower due to larger cutting angles; maintain steady feed for best results

Real-world use and decision points

Whether you’re shaping aluminum enclosures, automotive panels, or home workshop projects, this bit offers a single-tool solution for multiple hole sizes. The cobalt core and hard-wearing coating work together to support reliable, repeatable results across varied tasks.

Match the bit to your setup: the 1/4in hex shank provides broad compatibility with many drill chucks and quick-change systems, helping you reduce downtime between tasks while maintaining precision.

In short, EZARC combines material science with practical design to deliver a capable tool for metalworking. Individual results will depend on material, technique, and lubrication, but this step drill bit represents a credible option for expanding your drilling possibilities without frequent tool changes.