They are more properly called wedding ring spinners, and I believe the name is copyrighted by the Mack's Lure company. They come in many different colors, and with single or treble hooks. Some have glow-in-the-dark hooks and there are other variations as well.
Here is a link to the manufacturer's web site.
A lot of people use these for kokanee, and sometimes for lake trout, but I also catch an awful lot of rainbow trout on them while trolling for kokanee. Way more than I want.
BTW, if you post questions like this under Fishing Reports, the mods will just move it to Colorado Fishing, so you might as well post 'em there in the first place.