With over 54 years of experience, Alvin is one of the primary sources for drafting supplies and drawing equipment in the country, Together with this core group of products, we continue to meet the needs our customers with our expanding range of fine art, hobby and craft supplies, our large selection of drawing room furniture, and our wide assortment of exclusively-designed products, Black, Pivoting Adjustable Armrests, Adjusting up and down with the push of a button, Comfortable armrests have a 40 degree lateral adjustment to allow you to align your arms with your work surface, 4 locking height positions for a total range of 2 1/2"" inches, Adjustable width positioning and cushioned black polyurethane, Fits chair models CH277, CH290, CH444, CH555, DC208, DC310 and DC410 SKU: ALV6368