... ,powder coated nylon base,Y-19 mechanism, back tilt, seat height adjust,high quality, competitive price. Chair description: 1.material ... : bentwood inside6.mechanism: Y-19 mechanism, seat height adjust, back tilt, back can be fixed not to tilt. We ourself ... quality system authentication. chair specification: Size of back: 52x75CMSize of seat: 51x52CMHigh of Seat: 45~53CMSize of Chair: 62x66x113~121 Base ...