Offex Contemporary Sleek Vibrant Silver and Chrome Drafting Stool with Tractor Seat Black Plastic Floor Glides. Heavy Duty Chrome Base. High Density Polymer Construction. Chrome Foot Ring. Overall Dimensions: 17.25"W x 20"D x 32.5 - 41"H, Minimum Seat Height: 17.25"W x 13.5"D x 22 - 30.5"H Weight Capacity: 250 lbs. Single Unit Weight: 17.9 lbs. Degree of Swivel: 360 Degrees. Back Width: 14" Color: Silver. Back Material: Plastic. Back Type: Low. Frame Material: Metal. Seat Material: Plastic. Comfort Molded "Tractor" Seat. Pneumatic Seat Height Adjustment. 8.5" Height Range Adjustment.