Connector - 6.3mm (1/4 Inch) Mono Male Plug. Professional Heavy-Duty cable-mount Jack Plug. 6.35mm (1/4 Inch) MONO. Heavy duty mono 6.35mm jack plug with metal construction. Commonly used for the termination of guitar and signal cables. Die-cast connector and flexible protective cable boot. Suitable for demanding live sound and studio recording applications. Type: Mono Color: Silver and Black