Dunlop 7007SI Ergo Lok Strap System

This strap lock works perfectly well with my Fender Stratocaster. However, it is very difficult to fit to a Gibson and almost impossible in the case of my acoustic Fender. The issue is that the strap pins are not all of the same length and, sometimes, they are actually too short for this strap lock. When it fits, it is great. But when it does not fit well, it might be really difficult to properly close it around the strap pin and it might be very difficult as well to remove it.

A friend of mine had this exact product and I thought it would be very useful because my guitar strap is getting loose. The one I received had much lower quality. It has 2 pieces of plastic that rotate. The one my friend has rotates very easily and smoothly, but the one I got is really difficult to rotate, and after a couple of times the inner part actually got detached and doesn't go back in place very well. It takes a while to properly adjust it.
Eventually it does the job but I'm really disappointed with the quality it. I feel like it's gonna break sometime soon.