Model number: Q-2003M Size:Standard Chair Cover Material:Mesh Arm Type : PU pad adjustable 1D armrest(up&down) Mechanism Type: Slidable tilting mechanism with 3 level locking function Gas Lift: 100mm class 3 Base :R340mm Nylon Base Casters : 60mm Caster/PU Frame: PA Nylon Foam Type: molded Foam