Using your DeWalt DWA54100 rebar cutter is easy. First, make sure your power tool is turned off and unplugged. Attach the rebar cutter to your tool using the SDS Plus shank - it's designed for a smooth fit. When you're ready, turn on your tool and start drilling through the rebar. You can use the hammer mode thanks to the durable head design. Remember, always wear safety goggles and gloves when using this tool. After use, turn off the tool and let it cool down. To maintain your rebar cutter, clean it regularly with a dry cloth. If it gets dirty, you can use a mild cleaner. Store it in a dry place to prevent rusting. With proper use and care, your DeWalt DWA54100 rebar cutter will serve you well for a long time.