50pcs Diamond Coated Grinding Head Grinding Burrs Set for Dremel Rotary Tool

Amazing price! These work wonderfully on pottery to make small or big adjustments. I like that there are so many pieces.

I bought these because we had a pot explode in our kiln, which left little pieces stuck to other pieces of pottery, the various shapes allowed us to get the unwanted pieces removed. We did use water with a spray bottle as we were grinding, using a dremel. The individual bits seem to wear well, and none of the pieces broke while we were using them, which has happened with other brands, including even the Dremel brand at times. These are being used by students is so not the best care is always taken. We have only used them a few times so far so I don’t know how long they will last. If they do list, I will re-buy them.

Out of 50 bits, there were two shapes that I used most, and there was only ONE EACH of those two bits.

Work great for engraving slate. None have worn down or broken. Many choices of the right head for your project. Think i paid $8

What a bargain!

These bits removed pits of auto rust to bare metal in seconds. The variety of sizes helped in matching the bit to the pit! Will definately buy again but that may be a while as they seem to be long-lasting. Absolutely worth the price..

I'll admit, I trashed a couple of the burrs in this set, and it was from my mistake. For some reason, I got it in my head one day that these 120 grit burrs were 40 grit, so I started wailing on a piece of quartz with them.After I realized my mistake and started using these burrs in their proper context (which for me, is detailing stone carvings AFTER I've roughed in desired shapes with coarser burrs), they work fine. I still think they wear a little fast, but I'm a newbie to stone carving, and as it's the dead of winter at the time of writing this, I'm not carving stone that often since I do so in a basement that's very cold during winter. So it's entirely possible that my lack of experience and lack of articulation is fully or partially to blame for the burrs wearing so fast.I was eager to try the burrs that have the larger diameter heads, but I find that they're actually tricky to handle. I'm using a rotary tool that has a flexible line attachment, and it's harder to articulate the pressure I apply to my workpiece with the larger burrs. I don't have this issue with the burrs that have smaller diameter heads. But that's just my experience, your mileage may vary, both in how the burrs feel to you and how long they last.I do want to point out I don't carve stone wet; I will occasionally stop and dunk my workpiece in water, but I don't have a means to keep water constantly flowing on my workpiece and tool at this time, so that may be another factor in why the burrs have worn relatively quick for me. I don't know if I'll buy these again when I need more burrs, but I'm not unhappy with them yet I don't feel that they're outstanding in any way either.

For the price, they have been wonderful. I'm using them to grind porcelain and I always grind with the bit under water. I have now completed about thirty grinds and used four different styles of bits. So far, I've not had a single bit failure. I would certainly buy again.