The Switchcraft 1/4" Mono Guitar Barrel Jack Socket mounts flush with the guitar body edge for a clean look, no mounting plate required, the same style as used commonly on Ibanez RG and similar guitars. The shortest solder terminal is the output (to the jack's tip) and the longest length solder terminal is ground. Switchcraft products are renowned for their quality and durability and are made in the USA. Mounting nut and washer included.