Specifications: Made of high quality aluminum alloy material, super durable. Designed for bicycle or motorcycle which needs a bracket for phone or GPS device. Suitable for the handlebar with diameter within 21-31.8mm. Space-saving, light weight, high hardness, non-deformation, anti-corrosion and oxidation resistant. Non-skid pad prevents direct contact between the phone surface and bracket, better protect the phone and also play a role of cushioning. It doesn't block the camera or side buttons of phone, more convenient for use. Type: Bike Phone Holder Material: Aluminum Alloy Features: Fine Workmanship, Durable, Easy to Install Adjustable Length: 55mm - 100mm/2.17" - 3.94" (Approx.) Size: 8.5cm x 4.5cm x 4cm/3.35" x 1.77" x 1.57" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Bike Phone Holder(Not Included the Mobile Phone) 4 x Gaskets 1 x Pad 1 x Wrench