Using these Klein Tools pump pliers is easy. First, adjust the jaws to the right size using the Quick - Adjust Rivet with one hand. Then, place the object you want to grip between the jaws and squeeze the handles. Make sure the object fits well within the jaw capacity of 1.75 inches. When using, don't apply more pressure than necessary as the non - slip grip design should hold the object firmly. For maintenance, keep the pliers clean after each use. Wipe them with a dry cloth to remove dirt and debris. If they get wet, dry them thoroughly to prevent rust. Store them in a dry place. The induction - hardened jaws are durable, but avoid using them on extremely hard materials that could damage the teeth. The plastic - dipped handles are comfortable, but try not to expose them to sharp objects that could scratch or cut the plastic.