Our snap-in bookmark is designed out of flexible plastic so it snaps in easily into the 360° Disc System. With the graphic printed on top, it doubles as a 6 inch ruler and a bookmark. Printed with beautiful metallic gold ink, this ruler really helps your page stand out. SPECIFICATIONS SIZE: 1.75 x 8 Inches WORKS WITH: 360° Disc System **Please note: This listing is for the bookmark only and does not include discs or covers or other accessories.