Model number:Q-2002F Size:Standard Chair Cover Material:Mesh Arm Type : T type armrests Mechanism Type :Conventional Tilt Gas Lift: 80/100mm Base :R350mm Chrome Base Casters : 50mm Caster/Nylon Frame:Plastic Foam Type:High Density Mold Shaping Foam Adjustable Back Angle :150° Adjustable Headrest :Yes