KAISH Stereo Copper Guitar Bass Barrel Jack Cylinder Input/Output Jacks 4 Pins Gold

Inside hole diameter: 1/4" (6.35mm); Thread diameter: 11.8mm; Length without poles: about 39.5mm; Total length including poles: about 48.5mm This is a very good quality Barrel Jack with 4 pins,but not those inferior jacks made in cheap factories 4 Pins Stereo Jack (The shorter two pins are main conductor pins); Of course, you can use this item as Mono Jack as well Package includes: 1x Barrel Jack