The Office Master JR77-65 Arms are tall, height-adjustable T-arms with a 4.25" vertical range (approx. 9.5"–13.75" above the seat), ideal for users needing extra arm height. They feature lockable, removable tops with pivot, fore-aft, and side-to-side adjustments for personalized comfort. Backed by a 12-year frame and 5-year arm top warranty.