Using your Klein D202 - 6 diagonal cutting pliers is easy. Just place the wire between the jaws at the appropriate cutting point and squeeze the handles together. The tapered nose allows you to reach into small areas for precise cuts. When using, make sure the wire is properly positioned to get a clean cut. Also, since these pliers aren't insulated, avoid using them around live electrical wires. For maintenance, after each use, wipe the pliers with a clean cloth to remove any debris. You can also apply a light coat of oil to the joint to keep it moving smoothly. Store the pliers in a dry place to prevent rusting. With proper use and care, your Klein D202 - 6 pliers will last you a long time.