100% brand new and high quality Features: Ball holder diameter 15mm on both ends Arm length: 5cm Material: Aluminum A tightening screw on the side of the arm enables the sockets to clamp a 15mm diameter ball firmly. When loosening the side screw, the arm opens, it allows you to connect or completely disconnect the ball from the socket. Package Include: screw mount size:1/4-20 1 x Double socket arm mount Features: Double ball adapter extension joint connecting bracket for 15mm magnetic car phone holder. Round magnet head is more stable to fix the phone, double ball head rotation adjustment angle. Made of engineering rubber, good toughness, not easy to break. Can be installed on car recorder bracket/car phone holder, etc. Suitable for mobile phone holder, tablet stand, recorder, GPS navigator, etc. Specification: Material: Metal Ball Head: Approx. Name: Mobile Phone Car Holder suitable for 15mm Connector Top Joint Specifications: Two Ball Joints of the Same Size Notes: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package Includes: 1x Ballhead Extensiont Joint