Sealey SCR17 Workshop Stool Heavy-Duty Pneumatic with Adjustable Height Swivel Seat Four legged heavy-duty steel construction with a polished Chrome plate finish for corrosion resistance. Heavy-duty Ø32mm strengthening ring for stability which also acts as a foot rest. Ø365mm Swivel seat features pneumatic height adjustment (695 to 815mm), rotates fully through 360° and is made from high density foam with a black PU imitation leather cover for extra comfort and style. SCR17 Features - Four legged heavy-duty steel construction with a polished chrome plate finish for anti-corrosion resistance - Heavy-duty Ø32mm strengthening ring for stability which also acts as a foot rest - Pneumatic seat height adjustment range: 695-815mm - Ø365mm Swivel seat rotates fully through 360° and.