Quick facts
- Brand: COMOWARE
- Price: USD 36.99
- Rating: 4.10 (26 reviews)
If you want faster, more controlled hole expansion in sheet metal and similar materials, the COMOWARE Step Drill Bit Set is built around a four-spiral-flute design to help reduce walking and improve stability while drilling. The set covers a wide range of diameters (1/8″–1-3/8″), letting you step up sizes without constantly swapping bits.
You can view the current price and full details on Amazon here.
These step bits are made from M2 cobalt high-speed steel with heat treatment for toughness and wear resistance, and they feature an Aluminum Titanium Nitride (AlTiN) finish for added heat and wear resistance during repeated use. They’re suited for stainless steel, mild steel, aluminum, plastic, wood, and more—ideal for electrical boxes, metal plates, panels, and general install/repair work.
Usage notes: COMOWARE recommends use on mild steel up to 1/8″ thick or stainless steel up to 1mm thick. For best results, use cutting oil/coolant during continuous operation, start at a slower speed, and avoid excessive feed pressure.
- Four spiral flute step-bit design helps reduce walking, vibration, and improves drilling stability
- M2 cobalt high-speed steel construction with heat treatment for toughness and wear resistance
- AlTiN finish (rated up to 67HRC in the product details) for improved heat, wear, and corrosion resistance
- Wide cutting range from 1/8″ to 1-3/8″ for versatile hole sizing without frequent bit changes
- Made for common shop and jobsite materials including stainless steel, mild steel, aluminum, plastic, and wood
For DIYers and pros alike, it’s a practical pick when you need one set to handle multiple hole sizes cleanly—especially in thin metal where step bits shine.
