The RAM-B-138U consists of a medium length B size 1″ double socket arm, one2.5″ diameter round ball base, and one diamond ball base (both bases featurethe universal AMPS hole pattern). The ball and socket system provides shock andvibration damping, and allows for near-infinite adjustability to achieve anideal viewing and operating angle of your device. Drill-down mounting solution; diamond plate features AMPS hole pattern for attachment to compatible device holders Includes round ball base, diamond ball base, and B size medium length double socket arm; ball and socket technology allows for near-infinite adjustability Made of power-coated, marine-grade aluminum for durability and reliability in the most demanding marine environments Backed by a lifetime warranty Components RAM-B-202U RAM-B-201U RAM-B-238U Product Dimensions Overall Height: 5″ Socket-to-Socket Length 3″ Hole Pattern 4-Hole AMPS: 1.181″ x 1.496″ 3-Hole 120-Degree: 1.812″ Diameter Plate Size Round Plate: 2.5″ Diameter Diamond Plate: 2.43″ x 1.31″ Ball/Socket Size B Size (1″) Weight Capacity 2 lbs Materials Marine-grade aluminum Weight .5 lbs
