Ram motorcycle phone mount with a locking knob. Bran new just opens the box

RAM-B-149Z-A-UN10U The RAM-B-149Z-A-UN10U motorcycle smartphone mount is an X-Grip, U-Bolt Base device mount built for securing even the largest smartphones, as well as phablets and small tablets, to your motorcycle handlebars. It can also be attached to other vehicle rails. This mount fits handlebars/rails between 0.50" to 1.25" in diameter. It fits devices up to 4.5" wide & 5.5" tall. This is the short-length arm version of the mount (1.75” from socket to socket). The RAM-B-149Z-A-UN10U design has adjustable control points at both ends of the arm, which allows for maximal flexibility and virtually unlimited viewing angles. It uses a B-size ball and socket, which supports loads of up to 2 pounds, making it suitable for practically any mobile device.