No need to hold your mobilephone while riding, it can firmly fix your mobilephone, making you ride more safely. Features: Aluminum alloy material greatly enhances strength and corrosion resistance, making it not easy to rust and wear-resistant. Widely applicable, suitable for bicycle or electric vehicle handlebars with a diameter between 22.2mm-31.8mm. Humanized design, without blocking headphone holes, recharging holes, buttons or mobilephone camera. It has a width adjustment range of 55mm-100mm, suitable for mobilephones ranging from 4 inches to 6.7 inches. The stainless steel pull rod adjustment can quickly change the width of the mobilephone clip and clamp the mobilephone. Quick and easy to install and remove, and firmly hold your mobilephone. Specifications: Type: type A, type B, type C, type D (optional) Material: aluminum alloy Color: black Applicable in 55mm-100mm mobilephone Apply to 22.2mm-31.8mm diameter handlebar Item weight: 77g / 2.7ounce Package size: 85 * 55 * 39mm / 3.3 * 2.2 * 1.5in Package weight: 98g / 3.5ounce Packing List: 1 * MobilePhone Holder 1 * ShimRing 6 * Pad 1 * Wrench 1 * User Manual