Esselte system cards are ideal for use in card boxes or on their own. They are ruled on both sides and made from 200Gsm board. Packs of white, pink, green, yellow and blue. Perfect system cards to compliment the esselte card file boxes and index cards. 200 gsm quality board. Ruled on the front and back of the system card. Feint colours ensure your text can easily be read. Available in 3 sizes. Sturdy 200 gsm board ensures your system cards remain strong and rigid.