ZELCAN 10 Sizes Titanium Step Drill Bit, 1/4 to 1-3/8 Inches High Speed Steel Drill Cone Bits for Sheet Metal Hole Drilling Cutting, HSS Multi Size Hole Stepped Up Unibit for DIY Lovers Electrician

Good buy Works great

Nice stepper drill. I used it to enlarge a hole in a steel residential front door. It resized the whole perfectly for a new viewport. I also used it to drill a hole in an electrical box. Good durability. Good value. Speedy, on time delivery. I like.

Worked great at first, but didn't last as long as I would have liked. It started getting dull making it difficult to continue to use. At first it was nice and quick cutting through thin metal, but after a few holes it got slower and slower. There wasn't a wobble to it, so that was good. I like the size variety, but when the smaller sizes start getting dull, it's harder to use to get to the bigger sizes.

I used it to install a Tesla wall charger. Drilled hole in the drywall the size I wanted. Drilled out the cable hole on the wall unit plate. The job looked professional! Great tool to have in your toolbox.

Worked fine for what I used it for. Would be better with a drill press.

Value of this set is worth it

This bit is sharp, but is fairly soft. After drilling one hole in sheet metal, the bit has dulled quite a bit.

I needed to drill a hole in a lens board which is 3/16” aluminum. The bit drilled through easily. The hole was very clean though I cleaned up the backside with a Dremel. I was very pleased with the quality of the bit.

This tool works well for my project. Creating a perfect circle and easy to install. Will recommend

perforé de l'acier et les forêts ont tenu le coup.

Perdió el filo muy rápido. . Mala calidad

Haven’t used yet but seems to be of high quality

packaging is good, quality is average