Over time, pressure on your wiper blades during storage can cause them to break down and crack. Camco’s Wiper Stand-off Wedges lift the wipers and remove the pressure, helping to extend the life of your wiper blades. Perfect for RV’s in storage and during snowy days and the non marking grip feet are safe for your window. To use, you simply lift your wiper arm and place it in the cradle of the wiper stand-off wedge.