Z Clips- also known asmetal panel clipsare a modern version of theFrench Cleatmade from Aluminum. A Z Clip is made of two interlocking brackets, one half on the wall and the other half on the item to hang. Once installed you simply lift the piece on to the wall so that the Z Clips interlock and lower your piece. You can give it a slight tug to insure proper seating but that is it! Gravity does the rest.
The great thing about Z Clips is that they are so cheap you can put the clips on all your items and just leave them on. To swap out your items just lift and remove, then replace with the new item by placing, lowering and pulling down to snug the fit. Get a new piece of art? Just put half a clip on the back in just a few seconds and hang it right away on your existing rails.