Please note: This unit is used and does not include the wall mount screw. The Ergotron StyleView Sit-Stand Combo System allows users to easily transition from a sitting to a standing position while using their computer. This innovative system is designed to improve posture, reduce neck and back pain, and promote overall ergonomic health while working long hours at a desk. With the trusted Ergotron brand, users can expect high-quality materials and construction for a durable and reliable product. Ideal for individuals looking to enhance their workspace and reduce the negative effects of prolonged sitting.