Fire Protection Equipment Technician Class 6 Reference Book and Problem Collection I purchased the 374-question text with pencil markings and erased them for use. Most of it is erased, but there are still faint traces visible. There are also some marked sections. The mock exam problem collection is in very clean condition. I used these two books and passed the Reiwa 7 (2025) exam, so one of them has some issues, but I think it can still serve its purpose.