Neutrik NSJ12HF-1 stacking PCB mount, high quality 1/4 inch (6.35 mm) jacks. Highest mounting density. Two jackes stacked on top of each other. Fits into rack element of 1U height.
Neutrik dummyPLUG - NDJ Dust Seal Cap. Protects unused jacks from accidentally sticking the wrong cable in and from accumulating dust which would cause contact problems later.
Stereo, PC mount, switched. Used in some Marshall amps. Also used in many Psand recording consoles, Marshall Bass heads, and rack units. With black plastic nut. Made by Cliff UK.