| G17 National Standard Journeyman Electrician Questions Workbook | $81.99 |
| W24 National Standard Master Plumber Questions Workbook ICC Exam | $81.99 |
| 2015 Residential Plumbing Inspector | $76.99 |
| T17 National Standard Journeyman Electrician Questions Workbook | $78.99 |
| G24 National Standard Master Plumber Questions Workbook ICC Exam | $86.99 |
| T16 National Standard Master Electrician Workbook ICC Exam 2021 | $81.99 |