These are 4 jack in out boxes that cab be used for a variety of things on a pedalboard such as a 4 cable method using your FX loop with in and out.
you can use any combination of 1 to 4 jacks (they are all independent of each other)
Hammond powder coated box
Cliff 1/4" jacks
They can have many uses
they were built in house by our tech Ryan Storkson