Using the STEEL•MATE® 1 is easy. First, place it at the desired location on the job - site. Then, insert the rebar of sizes 3, 4, 5, 6, 7, or 8 into the stabilizer. The pre - assembled LEVELMATE will help you keep the rebar vertical. When you're done with the job, you can reuse it for future projects. As for maintenance, just make sure to clean it after each use to keep it in good condition. Avoid dropping it from a high place to prevent damage. Also, store it in a dry place to avoid rusting.