Using the GearWrench 82107-06 3-Piece Double-X Hose Grip Plier Set is easy. First, choose the right plier size from the set (5/16 in, 1/2 in, or 3/4 in) for your job. To install or remove hoses and lines, just place the jaws around the object and use the handles to grip. The compound joint allows you to work in tight spaces with minimal handle movement. When using, make sure not to apply excessive force that could damage the pliers or the object. For maintenance, keep the pliers clean after use. You can wipe them with a dry cloth. If they get dirty, you can use a mild cleaner and then dry them thoroughly. Store the pliers in a dry place to prevent rust. With a limited lifetime warranty, you can use these pliers with confidence for a long time.