This is a two-piece set of mounting hardware for affixing the extension wand of a Shop-Vac - in my case, to a rolling dust collection cart I built.
The bottom mount loosely holds the end of the extension wand, while the upper clip holds the wand in place securely and flexes enough to let it in and out.
Each piece mounts using four #6 screws - I used 1" pan-head screws, which seem plenty strong to hold the lightweight piece. I printed in cheap Elegoo PLA, but I'm curious to see how this holds up over the summer in my hot garage - if you have PETG handy, it might be worth using, just for the higher tolerance to heat.
Check my profile for other prints I've made for this dust collection cart - including a versatile handle, as well as simple bumpers to protect the corners.