These visors were designed to keep the sun and water off the screen when your fish finder is placed in a open environment. By using a fish finder visor, it allows you to reduce your screen brightness and still see the screen clearly which prolongs battery life. The added bonus of splash protection gives you more time fishing and less time cleaning. These visors are great additions for your kayak or your power boat. Made In Australia from black ABS Plastic. This is a 5-minute install using two stainless steel fasteners provided.