Fiddly to remove from "screwless" side
I was hoping to use this for temporary/prototype work - it isn't suitable for this purpose. It doesn't have a release button on the "screwless" side, but you can depress the spring with a small screwdriver. I'm sure it would be fine for more permanent work. The springs have plenty of bite. Wire doesn't pull out, but it does need to be stiff enough to insert.
