his 6-Pack 17mm Tightening Nut for Car Mount Screw-On is made from high-quality, durable plastic, designed specifically for users who need to replace screws on car phone mounts. These tightening nuts are crafted with precision and strength, offering a long-lasting solution. Installation is quick and easy, requiring no special tools. Simply screw the nut onto the ball head of the car mount, and your mount will be securely fixed in place. Each pack contains 6 nuts, each 17mm in size, and they are compatible with most car phone mounts, DVRs, camcorders, and wireless chargers, making them a versatile accessory for any mount. These replacement nuts are not only ideal for car mounts but can also be used with any other device that requires a secure ball head fitting, providing flexibility and convenience in a variety of settings.