Kantek's Single LCD Monitor Arm works with the STS800/STS810 Sit to Stand Systems. This arm holds up to a 27-inch monitor and mounts directly to the platform surface. Any product you return must be in the same condition you received it and in the original packaging.We usually respond within 24 hours on weekdays. Thank you for shopping at our store. This item is in the category "Computers/Tablets & Networking\Monitors, Projectors & Accs\Monitor Mounts & Stands". The seller is "tsuykoba99" and is located in this country: US. This item can be shipped to United States, Canada, Mexico, Bermuda.