Product Information: • Scooped back support • Multi-position seat plate mechanism • Danish-inspired contoured seat with waterfall edge • Polyurethane twin-wheel casters • Chrome hydraulic cylinder and tubular back support • Injection-molded back and under seat covers • 5-year warranty • Cylinder Size: 1025MB Features: Arm: Ratchet arm adjusts vertically and horizontally to allow user to operate comfortably. Back: Included Cylinder: Tall Foot ring: Adjustable Stool: Triple Lever Adjustment Specifications: Weight: 45 lbs. Stool Base Diameter: 23" Floor Seat Height: 24" - 30.5" Seat Measurements: Diameter 17″ Contour Model # BCS40ABT