Features 1、Application: U shaped ball head mount base is suitable for 13‑36mm guide rail, can be installed on bicycles, motorcycles, mountain bikes, electric scooters, etc. 2、Multipurpose: Ball handlebar mount base can be used with other accessories, can be used to hold mobile phones and satellite navigation devices, and install action cameras to record travel. 3、Characteristic: The head adapter ball base fits other dual socket arm cell phone mounts, compatible with other 1in ball socket design phone mounts, andprovides almost unlimited adjustability. 4、Premium Material: The main body is constructed of aluminum alloy for durability in harsh environments. The ball head is wrapped in rubber, 3D mesh design, excellent antislip performance. 5、Easy Installation: The installation is simple, the package includes all the necessary installation accessories, no complicated operations, convenient and easy for you to use. Specification Item Type: Ball Handlebar Mount Base Material: Aluminum alloy + rubber Ball Size: Approx. 1in / 2.54cm Scope of Application: Approx. 13-36mm / 0.51-1.42in Applicable Model: 1in 3D mesh U shaped ball head, suitable for 13-36mm guide rail, can be installed on bicycles, motorcycles, mountain bikes, electric scooters, etc. and tubular objects of suitable size Package List 2 x U Shaped Accessories 2 x Nut 2 x Gasket 1 x Mat 1 x Hook and Loop Fastener 1 x Ball Head 2 x Anti Slip Rubber Ring