b'Description: . Feature: 360 degree rotation, easy and convenient to install and remove. It can be installed on the extension rod of the bracket, connecting multiple mounts to use together. Connect another device with the Ball Base Adapter. This ball consists of a 1 ball connecting to a 1/4-20 threaded stud, the threads on this ball replace the bolt in any B-size socket arm, and the ball connects to the middle of the socket arm on the opposite side of the tightening knob. If you are looking to mount more than one device but cannot locate multiple mounting points on your motorcycle or vehicle, this base is the for ideal accessory for connecting both devices off of one mounting base. It is for for phone holder/camera bracket/walkie-talkie holder, for motorcycles/scooter/for cars and many other devices. Expand Ball only, other accessories demo in the picture is not included Specifications: Item Type: Expand Ball Material: Aluminum Aloy+Rubber+Stainless Steel Size: Length: app.75mm/2.9in Color: As shown Suitable: for motorcycles/scooter/for cars and other devices Suitable Devices: for phone holder/camera holder/talkie-walkie bracket and so on. Quantity: 1 Pc Note: No retail package. Transition: 1cm=10mm=0.39inch Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Includes: 1 x Expand Ball'