heyous 2pcs Gold Plated 2mm Mini Male Banana Plug to 4mm Female Jack Connector Adapter (Color: 1red1black)
Amazon.com: Hxchen Mini 2mm Banana Female Plug Socket PCB Panel Mount Jack Binding Post Terminal Connector Black and Red - (10 Pcs) : Electronics
2mm Banana Socket, 10Pcs J.40003 2mm Banana Jack Panel Socket Extended Post Plug Adapter for Electronic Instrument, Connectors & Adapters(Yellow) : Amazon.ca: Industrial & Scientific
Amazon.com: Pomona Electronics 5935-0 Chassis Mount 2mm (0.08) Insulated Banana Jack (Pack of 10) : Electronics
Banana Jack 10A Brass Banana Jack Panel Connector + ABS 2mm / 0.079 Temperature Resistance 30V AC-60V DC for motorhome (for boat) : Amazon.in: Home Improvement
INSIGNIA LABS - 6PCS-Pack 2mm Banana Female Socket Jack Mount Connectors for Banana Plugs Amplifier : Amazon.in: Industrial & Scientific