Greenhouse Clip

I was lucky enough to be given a greenhouse from a neighbor who was no longer using it. The T-rail screws that came with the greenhouse, which you use to attach things like strings, had seen better days though. I wasn't very happy with the screw solution either, as I adjusted them quite often, and it was a bit of a hassle to always have to get the tools out just to tighten the screw. Only to be annoyed when the lower part popped out of the rail again. Attaching the trailing strings to the sc