This stamping plate is from the forth Bundle Monster set, the first CYO (create your own). It is backed with branded lining to stop it from being sharp, comes covered with a blue cellophane sticker which you have to peel off before use.
On BM418 there are two full nail images and four smaller ones. I like the nuclear symbols but I don't seem to have used them yet! All of the images stamped across easily.
You can see all of the designs I have used this plate in here, and some of those are below: