Boss Drafting Stool with Adjustable Arms  and Footring, Black
Contoured back and seat help to relieve back-strain. Pneumatic gas lift seat height adjustment. Large 27-inch nylon base for greater stability. Hoode double wheel casters. Strong 20-inch diameter chrome foot. With adjustable arms. Available in four fabric colors. Optional glides can be used in place of casters. Item includes office chair with additional foot ring to convert chair into drafting stool. Overall size of the chair is 44.5" - 49.5"H and the seat height is 28" - 33"