The RAM-B-149Z-DEL2U consists of a zinc coated u-bolt base, standard length double socket arm and high strength composite cradle. Included in this package is hardware that will accommodate rails from 0.50″ to 1.25″ in diameter. The base includes black cover caps to be placed over the exposed ends of the u-bolt. The included composite rail adapter can narrow the rail to a minimum width of 0.5″. The mount is designed with a RAM 1″ diameter patented rubber ball and socket system that has adjustment points at both ends of the double socket arm; this allowing for almost infinite adjustment and perfect viewing angles. Compatible Devices: Delorme inReach Cradle Features: 1. Open access to all electronic ports 2. High strength materials ensure product longevity 4. Lifetime warranty 5. Made in the U.S.A. U-Bolt Dimensions: 0.50″ to 1.25″ Material: High Strength Composite and Powder Coated Marine Grade AluminumBall Size: 1″ Rubber Ball „B” Size Note: The „U” in the part number reflects product packaged in poly bag.Related Links:Delorme inReach New Products PageRAM GPS Mounts Page.