Compatibility: Fits LCD, LED flat screen TV and monitor up to 27". Support up to 15.4 lbs. Mounting Holes applicable 75 x 75mm or 100 x 100 mm. Two stage locking system is applicable to 3.3 c-clamp and 3.1 grommet base. Fully Adjustable: The gas spring stand can tilt +35°/-35°, swivel +90°/-90°, and rotate 360°Max height is up to 17.1", and max extension is up to 27.2". Double Benefits: Double efficiency and productivity to make working or relaxing that much more comfortable. Sturdy Construction: High-grade material c-clamp, grommet base and Mounting Holes plate ensures a strong and stable connection with your desk and monitor screen. Package Includes: WALI triple monitor gas spring desk mount x1, Mounting hardware kit, User manual, experienced and friendly US based customer support available to assist 7 days a week.