Mennekes 41416 is a locking blanking plug for CEE-type industrial sockets, retained mechanically to prevent unauthorised connection or removal. The plug seals the outlet against dust and water ingress when the socket is not in use and satisfies lock-out/tag-out requirements at temporary supply points. Typical applications include construction site distribution, event power, and any environment where unattended sockets must be secured. Supplied in packs of 40 pieces.