BASIC SEAT - BACK: Upholstered or natural stained beech-wood. STRUCTURE : Black or chromed steel structure, or with scratch resistant double coated aluminium finish. BASE: Available in black varnished steel, aluminium or chromed. MECHANISM: P1, fix plate. ARMS: All the models are arranged for assembling arms and right arms plus tablet. Benches are equiped with side arms. SIDE BLOCKS: 4 legs version can be pre arranged for side clips.