This book opener holder features large prongs that easy to use on thick books or slim songbooks. For music stand clip or music stand No need to remove the music clip to turn pages - just leave 3-4 pages outside the outside prongs of the music bookshelf to turn pages quickly and keep the book open for longer playback than a double page Meticulously Polished Stainless Steel - This music stand looks elegant and 't rust or corrode, nor it bend or deform easily Smooth , no damage to books Only secures piano music holder to books, sketchbooks and sheet music - not intended to be secured to keyboard music stands, it is specifically designed as a book holder to hold books open The Piano Bookshelf Clip for Keyboard is and suitable for all ages - sturdy but not too heavy, perfect for older or younger hands Colour:Black Material:Metal Package Contents: 3 x sheet music holder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.