The Vaico Windshield Wiper Arm Cap Nut - V107546 is a small, round cap nut that is designed to fit onto the end of a windshield wiper arm. This cap nut is made from durable materials and is designed to securely hold the wiper arm in place. It is compatible with a variety of wiper arm sizes and can be easily installed without any special tools. This product is an essential component for keeping your windshield wipers functioning properly and ensuring clear visibility while driving.