This telegram greeblie/unit is attached on the right side of a Mudtrooper helmet from Solo: A Star Wars Story and is 501st approved.
There still need to be a M6 lock nut clued on the upper left corner of the greeblie.
There is space on the inside for a M4 nut to be glued in so that it can be bolted from the inside of the helmet.
There is a 4mm hole on the bottom for an optional future flashlight attachment pin.