Real Estate Products-Lockbox-Push Button-"Kiddle" "AccessPoint" (formally Supra brand) heavy duty. Holds 3 keys. There is no combination set on these when they leave the factory. User can Set 3 or more (non repeat) numbers. Diagram of instructions are included. Note: If you forget the combination you have set or someone once in the box changes the combination, un-be-known to you, there is no way to get into the box. Rubber protective jacket.