20Pcs Diamond Mounted Point, 6mm Ball Head, 3mm Shank, Diamond Grinding Bit Rotary Burrs, for Jade Stone Jewelry Ceramic Carving Polishing

As an artist this item was of great use. Drawback was that .. well none really works great.

I order a lot of these for stuff I make these were almost unusable. It cut for about litterally 15 seconds and the whole thing was bald and useless. Do not but these

For the price these diamond bits can't be beat. I do advise using water to cool the bits down if using on glass or mirror. I usually use them on drinking glasses & mirror, this was a first on tempered auto glass. I will continue to order these in the future.

I etch glass as a hobby. These work great and last as long if not longer than more expensive versions

I just think the quality isn't that great, tends to wear down after a few uses

Used them on aluminum and didn't dull or clog.

Dulls pretty quick.

Tried 5 on ceramics. Not enough Diamond grit. Barely scratched the surface, + not strait shafts. I should have tested them as soon as I received them as I missed the 30 day return window.