The first step to installing these wiper blades is to remove your old ones. To do that, take out your wiper arm and use a screwdriver to loosen the screws that hold it in place. Once you've done that, take out your old blades and then put on your new ones by lining up the metal tabs with their corresponding slots on your vehicle's windshield frame. Then simply screw them back into place using a Phillips head screwdriver or a wrench and tighten them as much as possible using your fingers or pliers if needed.