The NL4MDXX-V from Neutrik is a 4 pole chassis connector, black D-size flange, countersunk thru holes, vertical PCB mount. The speakON panel mount connectors are the standard chassis connectors for loudspeaker / amplifier interconnections. They feature a unique metal locking system, making contact only once fully locked. The speakON receptacles are robust, versatile and easy to terminate. This connector is fully compliant to the device standard IEC 62368-1, due to its component certification according to IEC 61984.IEC 61984 certified > IEC 62368-1 compliantPrecise keyway for secure matingMetal insert in locking areaGlass reinforced V-0 materials make it extremely robust and dependableAccurate twist lock latching systemAirtight design - optimised for speaker applicationsProduct Range: speakONNo. of Contacts: 4 ContactGender: PlugConnector Mounting: PCB MountContact Plating: Silver Plated ContactsConnector Body Material: Nylon 6.6 (Polyamide 6.6) Body