Switchcraft Littel-Jax 1/4in Panel Mount Socket. From Switchcraft, this high performance 1/4in jack socket is designed for panel mounting. The open framed socket has a washer and nut included, ensuring the socket will securely affix to a panel and retain a reliable connection. Featuring a copper alloy contact with nickel plating, the socket is not only cost effective, but ensures a quality signal suitable for high-performance demands. Jack sockets are commonly used in the music industry, often found in amplifiers, electric guitars, keyboards and more. As well as being widely used in studio and stage based audio visual applications, they are also used in commercial public address systems, such as tour busses and aeroplanes, or nurse calling systems. Features and Benefits. Secure Panel Mounting High Performance Capability Cost Effective