This is a hook that slides on the Ikea Mosslanda Picture Ledge. What I'd call a plate rack. It needs a little raft that I put in the profile to help Keep the round parts round. Without it, it will flatten one side making it turn out a little phalic. But it only adds one minute to the print and comes off very easily. I also painted in the few supports it needs manually because the automatic supports went crazy and put in too many. it's a quick 25 minute print. It's great to hang those small 4x6in/100x150mm framed prints from. Or anything else for that matter.