ERGOTRON Ergotron LX Wall Mount Keyboard Arm Silver/Aluminum, up to 2.3kg - Brand: ergotron - Model Name: LX Wall Mount Keyboard Arm - Included Items: Mounting screws, instruction manual - Color: Black - Material: Plastic, Metal Original box not included. Everything shown in the photos is included. The plastic part that connects to the pole is deteriorated. These are not often seen used, so how about taking this opportunity? On Amazon, it's quite expensive at 47,425 yen.