●Seat: PU (Polyurethane) Integrally Molded ● Leg: Aluminum Die-Cast ● Caster: PA (Nylon) Double wheels caster ● Lifting Method: Gas Cylinder Type ● Weight: Approx. 11 kg ● ★ With Ring (Lowest Level Used/With Anti-Rotation Knob) ● sitting height (mm): 550 to 800 ● Integrally Molded Sheet