Quality Material - This double ball mounting arm is made from a sturdy composite material. Dual ball adapter is made of high quality metal, The ball joints are coated with rubber material, sturdy and durable.<br> Dimensions - The length of this ball adapter is 2.5 inches from one end to the other, 25mm spherical adapter suitable for motorcycle phone mounts with 25mm ball socket, it is used for GPS extension. Compatibility - This dual ball mount from 1" to 1 " can be used for Garmin GPS and bike mounts and other standard 1" / RAM B socket mounts, compatible with all industry standard 25mm mounting arms. Widely used - With this dual mount ball, this mount allows you to have the flexibility to rotate your device 360 degrees. 25mm installation for Garmin GPS, bike and motorcycle phone holders or any other 25mm mounting device. outdoor riding and photo shooting.<br> Quality Service - We strive to provide the best products and services to all our customers. Contact us if you have any problems or are not satisfied with our product. We will give you the best solution.<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store