This heavy duty mount consists of a yoke clamp base, double socket arm and a high strength composite cradle. The RAM yoke clamp mount will fit rails from 0.625″ to a maximum of 1.25″. Designed into the mount is a 1″ diameter patented rubber ball and socket system with adjustment points at the base and cradle. With a twist of the arm knob, you can move the yoke clamp mount to your optimum viewing position. Specifications: Docking Cradle: No Locking Cradle: No Fit’s Tablet’s WITH Cases: No Fit’s Tablet’s WITHOUT Cases: Yes Low Vibration Environment: Yes High Vibration Environment: Yes Cradle Features: 1. Compatible with various iPad cable/docking accessories 2. Patent pending roller design for super smooth placement and removal of the iPad 3. High strength materials maximize longevity of cradle 4. Full access to all ports 5. Lifetime warranty 6. Made in U.S.A.