This is a holder and mount for a JBL GO3 Speaker. the mount in the picture is for a 22mm handlebar on a bicycle. The holder is PLA and the mount is TPU. There is also a retainer to go into the loop of the speaker to hold it in place.

there are 4 holes for mounting, that way it can be vertical or horizontal with the provided attachment and any attachment can be made to attach it to anything.

They assemble together with two 10mm x 25mm screws and nuts