Need the name of a rotary carving "bit", please.

Please disregard. A dentist on another site knew the name and description…
https://smile.amazon.com/gp/product/B000HI5WUS/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 *

Some years ago, I bought a round (maybe one inch) flat rotary “bit” for my Dremel knock-off. I only used it occasionally, but it did its job better than any other similar tool I ever found.

I used it the other day and it popped out of the collet and, even after tearing a corner of my shop up, I cannot find it. I had to finish the project with the usual burrs, etc. Since then, I’ve looked through hundreds, or maybe thousands, of pictures of various Dremel and other manufacturer’s carving bits. It hasn’t shown up.

I am hoping that one of you much smarter people can help me find out what it is called so I can order a couple of them. I’ve gone directly to the Dremel site. I’ve looked at everything on eBay. I’ve done a simple search, all to no avail.

Description below..

Round and flat, about one inch in diameter. Thin, maybe 1/16th or 1/8th in thickness. Covered with granules of carbide ( I think). Gold colored originally. The round edge was broken with “notches” about every one fifth or sixth of the circumference. i.e. it looked somewhat like a tiny saw blade with only six teeth. It had its own shaft, I believe, but I might be wrong on that. I might have attached a mandrel ?? and simply left it intact in my toolkit.

Any help appreciated.

thanks richg99