Spring-loaded holder secures the iPad (1st, 2nd, 3rd, and 4th Gen) without case and more; interchangeable end cups allow you to modify the holder when upgrading devices Compatible with B and C size RAM round ball bases for attaching a double socket arm; ball and socket technology allows for near-infinite adjustability Made of high-strength composites for durability and reliability in the most demanding environments Backed by a lifetime warranty Compatible with: Apple iPad (1st, 2nd, 3rd & 4th Gen);ASUS MeMO Pad FHD 10,Transformer Pad;Dell Venue 10 7000,Venue 11 Pro 7000;HP ElitePad 900,ElitePad 900 G1,Pro 610;Lenovo S6000,Tab A10,ThinkPad 10,Yoga Tablet 10, 10 HD+, 2 (10 inch)