With a second extension for your LX Pro monitor arm, desk or wall mounted - or keyboard arm - you get even more flexibility in customisation. This accessory can increase the length of an arm by 23 cm (9") and at the same time offers a fourth pivot point. Added flexibility Increases the range of the arm for more uses and applications Durable design The aluminium construction is durable Tidy workspace The cable management system routes the cables under the arm so that they are not in the way