Using the Klein T1710 is a breeze. First, select the appropriate 10 - 22 AWG insulated terminal for your wire. Then, use the special locator to quickly position the terminal for a double crimp. Squeeze the narrow - span handles firmly. The built - in ratchet with a safety release will ensure a uniform crimp. Remember, this tool is powerful, so don't over - squeeze. When you're done, clean the tool with a dry cloth. Store it in a dry place to prevent rust. If you notice any issues with the ratchet or the crimping quality, have it checked by a professional. With proper use and maintenance, your Klein T1710 will serve you well for a long time.