The RAM-B-149Z-TO6 consists of a zinc coated u-bolt base, double socket arm, diamond adapter base and high strength composite cradle for the TomTom GO. 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. Included in this package is hardware that will accommodate rails from 0.50″ to 1.25″ in diameter. Also included are black cover caps to be placed over the exposed ends of the u-bolt and a composite adapter that can narrow the rail to a minimum width of 0.5″. This mount is designed to hold the following devices: TomTom GO 520 TomTom GO 520T TomTom GO 630 TomTom GO 720 TomTom GO 720T TomTom GO 730 TomTom GO 920 TomTom GO 920T U-Bolt Dimensions: Accommodates rails from 0.5″ to 1.25″ in diameter. Material: High Strength Composite & Powder Coated Marine Grade Aluminum Ball Size: 1″ Rubber Ball „B” Size Note: Part number reflects product packaged in clear clam shell for store shelf display. Related Links:RAM GPS Mounts PageRAM Motorcycle Mounts Page.