Carbide Burr Set 1/4" Shank 10PC Tungsten Double Cut Carbide Rotary Burr Set for Metal and Wood Carving, Grinding, Polishing, Engraving, Drilling in Sturdy Round Case.

I only needed one of these but the price was good and ratings were not bad. I don't make a living using these things but when you need them they work. Use goggles and an apron. I had these metal flakes all over me when I finished. Surprisingly easy to control.

Use caution when cleaning off burrs or making a hole bigger. Works really good but can take too much material if not focusing on the task. Just have to have a good grinder that doesn't blow apart. Chewed threw the metal like it was nothing. I will definitely be buying another set.

I work on heavy equipment and got tired of buying high dollar Bur bits just to constantly destroy them on bushing and bearing jobs so I bought these because they were cheap and I am very impressed. These cut better than any set I’ve ever bought in the past , and they hold up and the little case they come in is perfect for my service truck . If I ever wear these out , I’ll definitely be buying another set

I've only used one bit so far, it performed good and held up and is still sharp.

Sometimes a drill bit just won't do the job...

These are very nice burrs, they cut well for plastic and wood, have not tried them on metals yet. cutting edge is a good depth so they are not too aggressive and easy to control.

Very impressed by these bits. Have had the same one on my grinder and have used it several times. These are sharp and seem to hold up. Don't hesitate to purchase. Love the case they came in as well. Glad these are in my tool box at work (maintenance mechanic).

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.