Spring-loaded holder secures most 9"- 10.5" tablets with cases; interchangeable end cups allow you to modify the holder when upgrading devices ^^ Includes 4-hole AMPS pattern ball adapter, C size medium length double socket arm, and backing plate kit for drill-down mounting; ball and socket technology allows for near-infinite adjustability ^^ Made of powder-coated, marine-grade aluminum and high-strength composites for durability and reliability in the most demanding environments ^^ Backed by a lifetime warranty