Irwin Tools IRWIN Step Drill Bit, 1/8-Inch to 1/2-Inch Step, 1/4-Inch Shank (10231) Silver|Silver metallic

Didn't know these existed til now! Especially useful when having to make a pilot hole first, before drilling a larger hole.

It does a clean and professional drill every time and is made of high quality material that doesn’t easily break, also the value was very good

Did the job, drilling holes in steel edging; the thicker, older stuff. I didn't try it on high speed, but low, using lots of 30W oil and it did cut well....once you got it started. Used a center punch to start the holes, but found that they needed to be deeper before the drill point would catch. Once it caught, it was easy going......with pressure :) Pricey, but worth it for my project.

Love this step bit , great for impact !

This is the 3rd Unibit of this size in the last 10 years that I have owned, it is not that it is poorly made, its just that I keep using them. This is the only bit that I have found that I can cut gasket foil, if I do not have a punch that size (requires some trickery). It has many, many uses and I keep finding new ones. I have tried other brands but in this style, of the major brands, this last the longest of the non-impact tapered bits. I have run it at 7,500 rpm without incident and as slow as 2 rpm on 1/8" titanium sheet (prepunched starter hole). The Unibits may seem expensive when compared to HF or other cheap brands but with these you get quality and service life.

I bought this one to drill an end pin hole on my guitar for pickup installation. It worked flawlessly.

All good as described.

Very Niiicccce.