The Oxford® Index Card Page Marker allows you to take notes in books without damaging the pages. Write your notes on the 3" x 5" index card and bookmark the page. Each card has a colorful, reinforced tab that grips each sheet—perfect for color-coding your notes. This 36-pack comes with 12 of each color (Coral, Shoreline Blue and Orchid). The dot grid ruling on each side allows you to use the page marker on the top or side of the page. Each index card is made with premium-weight cardstock.