The Spring-Loaded RAM® X-Grip® Holder includes a B size Ball mount and fits 9"-10" Tablets for a secure and maneuverable mount to B-size RAM Mount sockets. KEY FEATURES Spring-loaded 'X' design with rubber caps sports great holding power without hiding your tablet; fits most 9"-10" tablets Included round plate features B size 1" RAM® rubber ball and allows for connection to any B size RAM® double socket arm Made of powder-coated, marine-grade aluminum and high-strength composite for durability and reliability in the most demanding environments Backed by a lifetime warranty The RAM-B-202-UN9U consists of a composite spring-loaded cradle, expandable grip arms, additional bottom support keepers and 1" ball base adapter. Included are extra easy access grip knobs, located on the back of the cradle for quick release of your tablet. The RAM-B-202-UN9U expands and contracts for perfect fit of most 10" tablets with or without sleeves, as well as some smaller tablets. The included 1" ball base includes hardware to attach directly to the back of the cradle and is compatible with all "B" size double socket arms.