the company I work for has a very strange bookkeeping system. I am required to balance the store check book both on the computer and by hand I use the 12 columnar pad for the manual reconciliation. at one time I needed a separate page for deposits manual checks computer generated checks. and even one more for outstanding checks. I have also found that it is much easeier to use this recording of checks to research when checks were written to whom and for how much. this pad is quite useful and durable. I plan on using them for as long as I need them.