These essential 17mm ball head nut serve as replacement parts for securing any 17mm ball head adapter in phone holders, ensuring your device stays firmly attached during use. Made from , these nut feature an easy to tighten design and come in a set of six, providing practical fastening for various mounting accessories like car phone mounts. Ideal for users who have lost original nut for their 17mm ball head phone mounts, offering a and dependable for maintaining holder stability. Perfect for everyday scenarios such as securing phone holders in cars, on desks, or with tablet stands, as well as mounts and charging setups. Keep these spare nut handy to quickly fix or replace worn out parts, enhancing the longevity and functionality of your phone holder accessories without hassle.