... in use, easy to operate, rigging with the automatic hand-clamping proof function safe and reliable, elegant appearance, can ... be applied to various standard and model's LCD. Features:Hand-protect functions.Panel Material: Aluminium alloy(black/sliver)—thickness: ... '', 19'', 21'', other size can be customized. Function:1. Electric control, Flexibility, stability, waterproof and dust proof;2. The screen ...