TruConnect 6.35mm Stereo Plug to 3.5mm Stereo Socket Adaptor

TruConnect-6-3mm-Stereo-Jack-Plug-to-1x-3-5mm-Stereo-Jack-Socket-TruConnect-20-2976-p-1-x-6-35mm-Stereo-Jack-Plug-to-1-x-3-5mm-Stereo-Socket-Adaptor-Converts-Jack-Connectors-to-Alternative-Connections-p-TruConnect-6-35mm-Stereo-Plug-to-3-5mm-Stereo-Socket-Adaptor

Price: 1.68 from Rapid Online Rapid Electronics Ltd.