For the Anovos Ghostbusters Proton Pack kit. The kit instructions just have you apply a bunch of glue and permanently attach the hose between the main pack and the wand. If you are adding aftermarket sound and light kits, eventually you will need to take things apart for repair.
This is basically a cylinder to fit inside the supplied tube and secure in inside the handle. The slot allows the part to slide over the wiring without having to remove any connectors. The hole is sized for an M4 tap. Drill out the fake hex head screw in the kit handle, and mark the tube and cut a hole for the M4 screw. Slide over your wiring, slide the adapter into the tube and align the holes. Insert the tube and line up the holes, secure with an M4 Hex head screw.
Should not require any supports. The side hole is sized for an M4 tap.