The best on the market! Guaranteed to hold your music book open flat. Just slide the "fingers" into the top of any book (see photo) that you need held open flat so your hands will be free. It will do the job no matter how thick or how large the book is. (This is not the cheap, flimsy one you may have seen elsewhere.) The Page Clip is made of ridged, strong, shinny 18 gauge, nickel-plated steel measuring 2½" X 4". Works on other books too, such as repair manuals and cook books. Buy some for your friends too!