Using this Klein 1005 Crimping and Cutting Tool is easy. First, select the right terminal or connector that matches the 10 - 22 AWG wire you're working with. Then, place the wire and terminal in the appropriate marked crimping die. Squeeze the handles firmly to make a good crimp. For cutting, position the wire in the hardened wire cutter at the nose and apply pressure. When using, make sure to work in a well - lit area. Avoid over - squeezing the handles as it might damage the tool. To maintain the tool, keep it clean after each use. Wipe off any dirt or debris. You can also lubricate the moving parts occasionally to ensure smooth operation. Store it in a dry place to prevent rusting.