A novel multipart punch and system allows apertures to be formed in hydroformed members with the slug which would otherwise result being divided into two or more smaller slugs. The bezel includes an accommodating portion and a fixing portion. A second intervertebral plate engages one or both of the superior vertebral endplate and the superior ring apophysis of the inferior vertebral body. A perimeter tube is attached to and is coextensive with the bottom perimeter edge. The trip mechanism of the device trips on the occurrence of either an arc fault or a ground fault.