Features1Sturdy and Lightweight: This phone mount is made from an aluminum alloy material that is both light and sturdy, suitable for use in harsh environmental conditions especially encountered during mountain biking. 2Stable Design: The mount features a fixed and stable design, so it will not easily shake. This helps protect your phone from turbulence and ensure that your device stays safe, even during the bumpiest rides. 3Versatile Size: The mount is suitable for 3.5 6.2 inch mobile phone sizes. With a strong clamping force, it can securely grip your phone to prevent it from slipping or falling. 4Easy to Install: The phone mount for handlebar is easy to install with no tools required. This lets you easily fix it onto your handlebars, saving you time and effort. 5Spacer Size: The thick spacer ring inner diameter is 21MM, whereas the thin spacer ring inner diameter is 31.8MM. This versatility allows greater compatibility.SpecificationItem Type: CyclingPhoneMountMaterial: Aluminum alloySupport Device: 3.5-6.2 inch devicesSpacer Ring Size: Thick Spacer Internal Diameter: Approx. 21mm / 0.83in, Thin Spacer Internal Diameter: 31.8mm / 1.25inPackage List1 x Cycling Phone Mount