Newest Mechanical Axle Grip & Never Fall Off - This upgrade mountain Bike Phone Holder adopt the newest mechanical axle clamp, it brings the strongest grip power to hold handlebar tight on bumps, absorbs the vibration from the motorcycle and the off road terrain while biking, will hold your phone in a super stable condition even at high speeds. Anti-Scratchy silicone padding the clamp, it not only increases the grasp force over bumps, but also protect your handlebar paint from scratching