I own this toy, and I use it for shallow vaginal insertion to stimulate the g-spot. However, I do not feel that it is safe for deep penetration or any kind of anal insertion. Once inserted, there isn't much choice but to tug on the wire to get the bullet out, and this eventually leads to the bullet dying. You might be able to avoid this if you put the bullet inside a condom and tugged on that instead to get it out. I just never felt it was worth the hassle.