Innovative wrap-around, push-in and secure mounting system Super easy, plugs into your phone in less than 5 seconds The universal design of our phone mount brackets securely holds 4" to 7" screen smartphones Fits 1.67cm-4.27cm diameter handlebars: The innovative silicone mounting strap makes it very easy to attach or remove the handlebars of any size bike, motorcycle, scooter or even stroller Our patented bike mounts are molded from integrated eco-friendly silicone so there are absolutely no moving or bonded parts to wear out or metal screws to rust - so this will last a lifetime Unlike hard plastic mounts, the integrated flexible silicone absorbs all shocks from bumps in the road, so your phone will never fall off your bike, the soft silicone will ensure your smartphone stays scratch-free 360 degree rotation, 100% waterproof - high and low temperature resistant (-30 degrees to 150 degrees) Material: Silicone Colour: Black Fits handlebar size: 1.67cm -4.27cm diameter Notice: Different monitors may display slightly different colors Please check as much as possible to make sure this item is what you need Manual measurement, please allow 0.5-1 inch difference (1 inch = 2.54 cm) Included: 2* Bike Phone Holder