PlasdentPlasdent 205CD Autoclavable Silicone Color Code Instrument Rings Large 80/pk

What is the smallest size instrument these will fit? I want to use them to color code grit sizes on diamond burrs with a 3mm shaft. Thanks.

Want to use for home use on knife handle. Will it stretch around steak knife handle ~3/4"x1/2"?

how many rings are in the box ?

What temperatures are these rings rated to handle?