AebDerp 50Pcs 1/8 Inch Diamond Grinding Head Diamond Drill Bit Cutting Burr Set Diamond Coated Rotary Burrs Set for Jewelry Glass Gemstones Ceramic Rotary Tools Stone Carving Accessories

I'm extremely happy with these, I was using some standard Dremel bits to carve stone, these carved sooooo much better. I carved a small primitive Talos pendant.

These bits are absolutely useless. I have ordered a handful of these kits from other distributors that have held up very well, but these particular ones are a complete waste of money. In less than 5 minutes, the "diamond" coating on these bits will literally come clean off the bit in pieces. This is not normal.

Bought these to do a couple projects. Engraving on some rocks. They worked good. They will not last forever but for the price it is worth it.

I liked the many different shapes provided in this set. They all come in handy when making wood / epoxy items.

These wear fairly quickly. But for the price it's worth it.

Not good for grinding down agates.

They do what you need them to. Bought them for my gunsmithing needs. They’re cool

The bits wore down in less then 2 minutes of use. Very disappointed. I was looking for something inexpensive but when it comes to something like this quality is more important than price