This window hook for bird feeders is so nice! I wanted a hook that was attractive and sturdy and this fits the bill exactly. The clear hook doesn’t get in the way of my view out the window. It’s actually really pretty. All I did to install was wipe the glass of my window down and then pushed the suction into the glass. That simple! It’s holding up quite well. The one in the photo is holding up a hummingbird feeder. But I am looking to get another one of these hooks to hang another bird feeder I have. This works so well!