MAXIMUM CAPACITY 1000 LBS Our heavy duty office chair cylinders are all Class 4, which is known as the most durable, longest lasting and highest quality chair piston. The thickness of small tube is 2.5 mm and big tube is 1.5 mm for weighting up to 1000 lbs
AFTER-SALES SERVICEOur goal is to provide you with the highest quality fittings to extend the life of your chair. If it is found that our office chair hydraulic cylinder replacement fails leaks, or starts sinking, to be broken within one year, please email or send message to us. We immediately you return and exchange service.