Money calculation slips, 2-ply carbonless, 50 sets, easy to fill in with 14 lines. - Product Name: Money Calculation Slip S-10 - Number of sheets: 2-ply carbonless, 50 sets - Model Number: S-10 - Size: 14 lines This is a set of 8 books. Although unused, please understand that these have been stored at home. Thank you for looking.