bar chair mechanism 1,make to accept gas lift 2,seat height adjustable 3,any angle tilt lockable bar chair mechanism1,make to accept gas lift2,seat height adjustable3,any angle tilt lockableItem:HYT-251)Material: Steel2)Plate Thickness: 2.5mm3)Packaging: 40pcs/carton4)Carton size: 48x29x29cm5)N.W.: 0.65kg/pcs bar chair mechanism