Bought this for my husband’s easy chair. He is paralyzed on his right side. I needed a tray that would allow him to have a drink, snack, remote control easily accessible for his left hand. Something that didn’t get in the way when he needed to stand, or pull his wheelchair near. The clamp is sturdy, very strong, and fits the large chair arm. It stays put. Perfect for watching his tv sports, and a good movie. Whatever I can find to make his situation easy, is in my opinion, an outstanding product. This was a very good purchase.