10x Double Cut Tungsten Carbide Rotary Burr Set 1/8" Drill Bits for Dremel Tool

This set of drills is not as strong as I imagined. I mainly use it to trim the protruding places after welding. After using it a few times, I found that the teeth of one of the drills are deformed. It still works though, so it's still a good product, at least it did my job.

I needed to widen the holes in a door frame columns for my shop so I could get it square. The base plate is 1/4" thick steel. Nothing I had small enough, strong enough or aggressive enough to fit in the holes and widen them. So I ordered a plasma cutter! But the shipping got delayed. So I ordered these not having much hope they would be any good. Well, I was certainly wrong. I through the bit on my Dremil and in about 8 minutes 8t had chewed through roughly 1/4" of metal with no sign of slowing down. I don't know how long they will last but for the price they are doing great.

I use them to cut out and smooth engine plates from 1/8th inch aluminum. The picture is of a unfinished emaxx RC engine mounting plate.

For the price these burrs work fine. I use mine mainly on wood so they seem to hold an edge fine

I previously had used the style of bit with crosshatched teeth to cut aluminum - they end up getting clogged and becoming useless super quickly. These ones had no such issues, just kept cutting until the job was done. Great product