This is a gutter clip designed to make putting up Christmas lights easy, from 3 different houses I have owned they all worked perfectly.

I actually designed this Christmas light clip years ago under an old username. I recreated it with calipers from a physical light clip I had printed years ago and saved it as a STEP file this time. I decided to give my defunct user name credit as a remix for this new more easily remixable design. "Remixed from": https://www.thingiverse.com/thing:14515/