The RAM-B-149Z-TAB8U consists of a zinc coated u-bolt base, double socket arm, diamond base adapter and Tab-Tite™ universal clamping 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. The included Tab-Tite™ cradle includes a spring loaded back plate and custom support cups for 10″ screen tablets WITH heavy duty cases. The spring loaded design makes it easy to load and unload your tablet, along with keeping it secure while on the go. Interchangeable cup ends are designed to optimize the functionality of your tablet, allowing access to audio jacks, usb, power, and other ports, your tablet can be used just as it was intended. The RAM Tab-Tite™ cradle is compatible with the following tablets: 10″ Screen Tablets with OtterBox® Defender cases 10″ Screen Tablets with Gumdrop Drop Tech cases 10″ Screen Tablets with Griffin Technology cases 10″ Screen Tablets with Belkin cases 10″ Screen Tablets with heavy duty cases The Tab-Tite™ cradle is compatible with any tablet or reader that will fit the dimensions listed below. It is important to verify the dimensions of your tablet when determining the overall size. Tab-Tite™ Cradle Dimensions: Maximum Width = 8.31″ Length Range = 8.5″ to 10.5″ Maximum Depth = 1.12″ U-Bolt Range Dimensions: 0.50″ to 1.25″ Tab-Tite™ Cradle Features: 1. Support cups contain open slots to accommodate for tablets of various sizes 2. Back plate can support various size support cups 3. Spring loaded tension provides secure support for your tablet 4. Spring loaded cradle allows for quick release of your tablet 5. High strength materials maximize longevity of cradle 6. Full access to all ports 7. Lifetime warranty Material: High Strength Composite & Powder Coated Marine Grade Aluminum Ball Size: 1″ Rubber Ball „B” Size Note: The „U” in the part number reflects product packaged in poly bag.