If you are figuring out how to remove the base of the Magnetic spring base, just insert a small pliers into the holes on the back of the base plate and twist.This comes with screws that are right for most applications, but it is also easy to substitute longer screws or more kind of anchor if you think you need it. The Magnet is strong enough to hold and stop the door, protect your door and wall from damage and conveniently holds your door open. The small round part is mounted on the door and the larger part is mounted on the skirting board or wall. Size: high 2.2 inch(56mm)