Anet A8 improved linear chain clip

I didn't really like the design of any of the existing clips, all the ones I tried kept falling out or just felt flimsy. It took me a while to get the right dimensions, but this one should fit perfectly. If it goes in too tight, do not force it, do not try to sand it or trim it, it's probably the chain link opening that needs cleanup. I printed 26 of these for my chain and only 3 wouldn't fit right because the chain links needed some light cleanup, but after that all fit well and are easy to rem