This stamping plate is from the second Bundle Monster set, from 2011. It is backed with branded lining to stop it from being sharp. This is useful, without it it is easy to slice open your fingers and palms which I have been known to do accidentally in the past with other branded plates.
There are six images on this stamping plate, four full nail images and two solo images. As you can see they stamped really well, the rainbow was the only one I had minor issues with but I have used it before on my nails and it stamped well.
Much easier to stamp than to freehand all of these zig zags!