Manufacturer BONTEC. Its extra long arm can extend from 65mm to 850 mm. Extra long swivel arm: Our TV wall mount can extend up to 850mm from the wall; Fully flexible: Designed with function of +/-90° swivel / +/-8° tilt/ +/-3° rotation, with 3 joints on the main arm, this universal and stable TV wall bracket is fully movable and flexible.
eBay