Bindex Bible size (Diary size) 6-hole personal organizer refill, calculator refill 3, graphite 536 Bindex bible size (diary size) 6-hole personal organizer refill A thin calculator that can also be inserted into A5 size 6-hole type items comes with an 160mm ruler 1 included external dimensions: 3.1 inches (width) x 6.7 inches (height) x 0.2 inches (thick)