Thank you for showing your interest in Cylinder Wrench Plastic from Oxygen Equipment. The Cylinder Wrench Plastic is a product of B & F - Allied Healthcare and is thereby made of the highest quality. If you have any questions regarding Cylinder Wrench Plastic or any product in Oxygen Equipment, please contact us. Our experienced personnel will answer any questions you have about Cylinder Wrench Plastic. Also, if you are interested in purchasing large quantities of Cylinder Wrench Plastic or any Oxygen Equipment, please contact Customer Service.