... .INNERWood free paper, acid free paper, 56/60/70/80/90/100/120/140gsm etc inner part: 1 ~ 4 colors printing ... , including week plan , monthplan, calendar, addressBINDINGBinding with sprial, glue, six ring, wire binding ... "8) Imprint area: 4 x 6"Inner packing:25pcs/ctn Business document organizer with calculator