Oddly enough i found this product on amazon while searching for something to replace it. I suppose i should warn people.This at best holds thin books. Anything that has any recoil (books that close themselves), and its uselss. im not talking spring loaded, just plain paper back books.The good:Adjustable, collapsable.The bad:rarely holds pages secure.easy to break.definitely not worth 11$. think i got mine for 5 at office depot.