711 - 5D Gray Chrome Aluminum Gaming Chair The 5D armrest of the office chair is a component that is both practical and beautiful. From the material point of view, the gray aluminum alloy is sturdy and durable and can withstand greater pressure. The use of chrome plating technology makes the armrest surface smooth and shiny, has an excellent texture, and can effectively prevent rust and wear. The 5D function allows the armrest to be flexibly adjusted in five dimensions: up and down, left and right, front and back, rotation, and tilt. Whether you need a suitable arm support height for typing at work or want a comfortable arm placement angle when playing games, this 5D armrest can be precisely adjusted to bring a comfortable experience to the user.