1Pc 1/4 Carbide Burr Set 1/4" Shank Head Dia 1/2" Tree-Shape Die Grinder Bits Rotary Tools Attachment Kit Rasp Accessories Metal Wood Stone Steel Grinding Deburring Cutting Porting Carving

What can is say. I have used this several times and it still seems sharp. Would buy again.

Only used once, but removes a lot of car frame metal fast, easy to control. Seems like it will last a long time.

I used it at work and sometimes on projects at home.very durable just eats away material.easy to use on a die grinder worth the money very sharp. Use PPE when using it.

works well and well made to perform the way it is supposed to.

Great for cleaning up edges of cut metal. Much faster than using sandpaper or a grinding wheel. Small size is great for getting into small or tight spaces. These fit my Milwaukee rotary tool. They use the same shank as a Dremel, so I expect that they would fit that, too. Makes much quicker work of cleaning up cut edges for safety or for better fitment.

These are the ones.

I needed to carve some aluminum post caps to fit around the handrail on a deck. This came in a small plastic box to keep them clean and the blade edges sharp, nice touch. These made quick work of the caps and the finish was clean and crisp. I'll order these again if needed. With the little box it came in, I can store this in my tool box without worry that it's going to get damaged or I'll cut myself reaching in. Great stuff!

This carbide burr has a head that is just shy of 1/2" (probably 12mm) in diameter, the cutting area is 1" long and total length is 2-3/4" it has a 1/4" shank. I used this on a small job to grind a few inches of welds away on a36 steel and it worked great and got in an area that few other tools could reach. I used it in a handheld drill at slow (sub 1000 rpm) speed in order to keep good control, and at that speed it produced a very find dust like you would expect from using a fine machinists file. I probably ground away about 1 square inch of 1/16" deep material or so and had a very nice amount of control to keep the area flat. There was no visible damage to the cutting edges after this small job. Comes in a nice standard plastic milling bit type case.