This is a left/right set of polished aluminum Remastered Aeron armrests. Just the yoke with the 4D arm hardware. You will need to provide your own armpads and armpad mounting screws. In some of the photos, there is brown tape; the tape is merely present to secure all the loose parts of the 4D arm hardware and to prevent anything from getting lost. They are in decent used shape. There are some scuffs, scratches, stains, and hazing on the polished aluminum. Taken off a used Remastered Aeron recently. These are what Herman Miller calls “fully adjustable” armrests. Informally known as “4D” armrests. This means the armpads. To be perfectly clear, these Herman Miller “fully adjustable” or “4D” armrests are NOT a 1:1 copy of Steelcase’s 4D armrests; these Herman Miller armrests do NOT slide laterally but only rotate/pivot laterally. These can technically be fitted to a Classic Aeron — message if you need assistance. These armrest yokes will physically bolt up to the Classic Aeron’s swing arms… If you don’t understand what this means, then, this swap may be too advanced for you.