Features: Mechanical locking: bracket adjustment knobs is mechanically locked, stable and firm, and not easy to loosen. Easy to install: The knobs shafts rod can easily adjusted to install the mobile phone. The 4-grippers are equipped with Non-slip damping pads, which will not hurt the mobile phone. Convenient operation: reserve the position of keys and interfaces, and do not block the screen information, making the riding operation more convenient. 360degree rotation: spherically adjustment shafts design, no visual dead angle, more comfortable and convenient. Wide compatibility: the stretching range of bracket is about 55~95mm/2.16-3.74inch, which is applicable to most mobile phone sizes. The diameter of bracket pipe is about 20-35mm/0.79-1.38inch, which is compatible-with most bicycles and some electric bicycles and motorcycles. Specifications: Material: Aluminum-Alloy Color: Black/Titanium-Color Size: As Shown in the Picture Note: Please allow 1-2cm errors due to manual measurement, make sures that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Bike Phone Holder