Sekisei - The Card System Card Holder - Business Card 3-Tier - Light Green - C-180 Features an index with color markings for frequently used business cards and cards. Improves searchability. Replaceable card holder. Double-sided pocket type allows 6 business cards or cards to be stored in one pocket. Includes index sheet. Can be classified by “English letters” and “Kana letters”.　Compatible with Bible-size notebooks [6-hole refill pocket]. Trading cards will not fit. Headings pop out of the poc