The BU-P2269 is a panel mount dual banana jack with posts spaced at the industry standard 0.75" (19.05mm) center-to-center. Can be mounted to panels up to 0.25" thick.
The BU-00232 is an uninsulated, panel mount 4mm banana jack with a solder tab for wire connection. Compatible with unshrouded and retractable 4mm banana plugs.