speedster93b
+1y
i used to work at a body shop too, and we used something very similar to that, made by 3M we called them eraser wheels, because as everyone has said, they're like an eraser.
anyway, they work great for removing vinyl graphics. they do burn paint if you go too slowly with it.
for just adhesive gum residue, i'd use a 3M adhesive remover and a good fingernail.