"Provide protection against accidental or intentional access to sharps containers. Can be wall mounted (mounting hardware not included) or set on counter top. Feature needle notches for faster, safer removal of needles from tube holders. Polished viewing windows on all four sides provide better fill-level visibility to meet Federal and State OSHA requirements. When containers are full, they are easily sealed and disposed of according to Local, State and Federal regulations. Can be autoclaved or incinerated. Units nest together for efficient storage. Locking wall cabinet accommodates both styles and sizes. All cabinets are keyed alike for convenience."