The GIVI Smartphone Navi Holder is designed for handlebars with a tube diameter ranging from 8 to 35mm. This model, S920L, can accommodate devices with the following dimensions: minimum dimensions of 144 x 67mm, maximum dimensions of 178 x 90mm, and a maximum thickness of 13mm. It is compatible with motorcycles, scooters, bicycles, ATVs, and snowmobiles. The holder allows for easy insertion and removal of your smartphone. Please note that the holder is delivered without any accessories.