StarTech.com Adjustable Arm Rest for Office Desk,StarTech. com Adjustable Arm Rest for Office Desk, Ergonomic Arm Elbow Support, 360 Degree Rotation, Clamp On No Drill Installation Arm Rest for office desk Swivel motion for typing scrolling Ergonomic design Reduced stress on shoulder arm wrist 6 level height adjustment 360 deg motion Fully assembled Clamp on no damage to desk; Desk thicknesses up to 2in (52mm) VPN: 1AHC DESK ARM REST SKU: AC831441 UPC: Loading ERGONOMIC SUPPORT: Enhance comfort and