Made of high-quality materials, it is sturdy and , shockproof and stable, and has a long service life. Easy to install and remove. It can be installed on the extension rod of the bracket, and multiple installation parts can be connected together for use. If you want to install more than one device, but cannot find multiple installation points on a motorcycle or vehicle, this base is an perfect accessory to disconnect two devices from one mounting base. It is compatible with phone holders/camera holders/intercom holders, motorcycles/scooters/cars and many other devices. Product Type: Expansion Ball Applicable to: motorcycles/scooters/cars and other equipment Applicable equipment: used for mobile phone support/camera support/intercom support, etc. material:Rubber+metal colour:Black Package Contents: 1 x Expand Ball Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.