We have various models and will receive (1) of what we have in stock. The coax cable tester mapper coax locator tracker toner with case is a diagnostic tool for F-Type coaxial cables. The tool comes with a case for convenient storage and transport. We have tested all units to make sure they read a mod. You will received 2 each of the the numbered mods 1-8. Even though we have tested every unit some of them have low battery or need the battery replaced. Replacement battery's are not supplied, you will need to purchase 2  CR20232 if needed.