Housweety 100 Rose Gold Book Scrapbooking Album Menu Folder Corner Protectors Alloy(Cadmium Free) size:23mm x 16mm( 7/8"x 5/8")Thickness:5mm( 2/8") It fit 5mm( 2/8") thickness book Environmental protection,light weight,convenient installation Can be used with a variety of Book Scrapbooking