Metal Hand

What do you call the toy with the metal bristles that can push your hand on and see it on the other side?

It can be square or round and after you remove your hand, or object you use it goes back to normal. It has a few hundred metal things on it.

Pin Art Frame ^_^

presure sensitive needle for metal and
plastic for the cheapy ones ^_^

Best site/choices/price i could find you ^_^

http://www.officeplayground.com/pinartpage.html

Entombed – Left hand Path