6.3mm Mono-RCA Female Adapter Plug

6.35mm (1/4 Inch) Mono Plug to RCA Jack Adapter - silver Plated (Yellow plastic center)

A 6.3mm-RCA female adapter plug is a connector that allows you to connect a device with a 6.3mm (1/4 inch) jack to a device with an RCA input. This type of adapter is commonly used in audio equipment to bridge the gap between different sized connectors.