Stainless Steel U-Bolt Mount with 1 inch Ball Arm & Diamond Base The stainless steel u-bolt base makes attaching to handlebars, tubing, or railing a breeze. Simple to install and easy to use, the possibilities become endless. Rubber ball and socket technology allows for almost infinite adjustment and perfect viewing angles. High quality materials insure your device is safe, secure, and within easy reach. RAM's patented design also dampens shock and vibration helping to extend the life of your mobile device. Included in this package is hardware that accommodates rails from 0.75 inch to 1 inch in diameter. Material: Powder Coated Marine Grade Aluminium Ball Size 1 inch Rubber inch B inch Ball Size Components RAM-B-238 RAM-B-201 RAM-B-231 Common Applications: Bicycle Mount Motorcycle Mount TIP: If you go offroading or inch greenlaning inch on your bicycle you will need a rugged mount for your GPS.Just add the appropriate RAM holder to this mount and you are ready to go.. Garmin GPS 60 & 76 series, all eTrexes, Dakota, Colorado, Oregon, etc, can be mounted in this way.