This is an original OEM Wausau Paper Astrobrights Card Stock, available in a pack of 250 sheets. The heavyweight cardstock offers great durability, making it ideal for applications such as color-coding, menus, and posters. It is acid-free and lignin-free, ensuring consistent and trouble-free performance in laser printers, inkjet printers, copiers, and offset presses. The cardstock has a weight of 65 lb.