This handlebar mount with 1 inch ball and U-bolt base. The 1" ball joint is attached to the aluminum alloy base. TPU over-molded ball head, non-slip and wear-resistant. can be sure that your handlebar extensions will not loosen or rotate, providing safe and reliable solution for you to install phone holders on the go. Aluminum alloy U-Bolt base Suitable for mounting to round, square and profiled rails and rear-view mirror bars with outside diameters from 0.5'' to 1.25''. The U-shaped design allows the handlebar mount to be securely fastened to the any rail. Rail mount fits on motorcycle bull bar, bike handlebar, UTV roll cage, UTV front bumper, ATV roll bar, off-road vehicle roof rack, Jeep head rack, trucks, even kayak rails and large handlebars that meet the dimensions specified above. (Please Note: Before purchasing, please measure the diameter of the mounting rail to confirm whether this ball mount fits your rail). Perfect gift, Whether you're cycling enthusiasts or professional, U-bolt base handlebar mount will meet your needs to free your hands. The delicate and simple design makes it great Christmas present gift for friends, give them the convenience and surprise of riding! Lifetime warranty, Handlebar mount with U-bolt base will provide lifetime warranty, if you have questions about the quality or use of the product, please contact us in timely manner, your questions will be answered within 24h. Strg 1'' Ball Mount with U-Bolt Base, U-Bolt Mount for Rails 0.5'' to 1.25'' in Diameter, Ball Mount Compatible with RAM 1" Ball Double Socket Arm Bike Handlebar Motorcycle ATV/UTV and More Rails