One little bit of advise I might offer if You make 1 of these, use a different type of snap swivel the type he used rust's easily even the stainless cause the spring isn't stainless. And then when it get's cold the "slide release" get's stuck. We use some of these on our trailers to hold the door's open and each winter if I don't drag a screwdriver with me when I go to open or close the door's I get to exercise my vocabulary