Y27-2255ZJB4H Through-Hull Vacuum Sealed Connector, with 55 pins, rated current 5A, voltage withstand 1200V, through-hull socket, wall thickness up to 10mm, with matching plugs at both ends, push-pull locking for ease and speed. Both ends of the socket are gold-plated alloy pins, and the plugs match the corresponding sockets, commonly used for aerospace and aviation test platforms in vacuum detection.