Carbide Burr Set 1/4" Shank 8PC Tungsten Double Cut Carbide Rotary Burr Set for Metal and Wood Carving, Grinding, Polishing, Engraving, Drilling in Sturdy Round Case.

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.

Modifying a gm marine alternator bracket.

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

Works great on my Milwaukee rotary toolGotta be careful though will gouge if leave in one place to longWill buy again

Right out of the container I use them And they chew up metal. In a big production shop,I'm don't know how long they would hold up.Perfect for the homeowner.

Cheap but works like a charm. I’m an electrician and use it to deburr cable trays and pipes. Cuts fast and seems durable. Hope it will last a long time.

These are very sharp well built and long lasting from what I have witnessed so far after several weeks of use. The carry case is outstanding as well. This is a fine product I will be purchasing more in the future as they were out.

Impressed ! I'm a remodeling contractor and a Offroader, I have cut out some groves in 1/4" steel and kept its edge sharp. Would recommend