20 Pcs Carbide Burr Bits 1/8" Shank Compatible with Dremel Milwaukee Metal Grinding Wood Stone Steel Carving Cutting Engraving Grinder Kit Attachment Rotary Tool Accessories Set Harder Than Diamond

The media could not be loaded. These carbide bits are wonderful. They are my new favorite thing for grinding metal. I have had exhaust pipes stuck on my motorcycle for a good 3 or 4 years. I had tried a variety of methods to cut the the flange and bolts, with no luck. Then I found these carbide bits. I researched a lot of the different ones, and these are the best.They do not break if you use them correctly. One important thing is to make sure you have inserted them completely into your rotary tool. I used the rounded bit in the video for about 4 hours before I switched to the pointed bit. The pointed bit worked much better for the exhaust flange and bolt I was grinding. It took me about 9 hours total, which would have been quicker had I used some cutting oil on it. They do work and are solid and good quality. Mine have stayed sharp despite grinding hours with just one bit. The other photo with the black post was a hole I was grinding out to fit two pieces together. That's the same bit I used to grind both exhaust pipe flanges and bolts down and it's still very sharp.I would Highly Recommend these Carbide bits. Lots of reviews say they break, but that's because they were probably not being used correctly. You must insert them all the way down into the rotary tool. These bits are very easy to use and have many uses making it a wonderful addition to any tool box.

I am a wood carver and use these various burr cutting bits to shape intricate areas more accurately than I can with a knife. I use these in my variable-speed Dremel rotary tool, and they work great. These bits are very sharp and cut well at a properly controlled speed. Because these burrs are sharp and closely knit. I use a toothbrush to clean the bit. *Remember to wear eye protection, and I do wear a respirator because of the fine dust it can make*.

Work great only problem I had. I had to go a little deeper the it would reach so I loosenedit in the Dremel pulled it out about 1/2" turned it on I had the speed set a little to high the shaft instantly bent almost in half as soon as I hit the power, that happened to 2 of them. All the others worked Great!

Build Quality and cutting is excellent and can use with 20,000 RPM pneumatic grinder. but I think it's better using 38mm bits for more delicate works because I have used my brand new "C1" bit right after the unpacking to Enlarge a drill hole in a 0.040" thick Aluminum alloy (2024) Alclad sheet and it broke in to two.

A good value, considering the price. A 'real' carbide bur set would cost 3-5 times more, this one works for long enough to be considered as good.

High quality variety for many uses

Great design good cut works great

bought for smoothing and shaping of 3D printed parts. These are excellent bits!! they fit my Dremel with no issues and remain secure until I remove them. I have also used them on wood and aluminum with the same results.I will buy a couple extra sets to have as extras for when, if ever, these wear out. 100% satisfied!!