Startech Rugged Messenger Keyboard Case USPTLSTNDB, SmartPhone/Tablet Holder, Aluminium, Black, Adjustable Angle, Anti Slip Base, Multiple Viewing Angle, Compact, Lightweight, Foldable, Easy to Use, Durable. Made of durable aluminum, the universal phone and tablet holder provides a stable platform for most smartphones and 4" to 13" tablets (maximum 11 mm depth) such as the iPad.