Thank you for showing your interest in Tru-Close 600ml Gravity Drainage W/ 36" Tubing from Uresil (US). The Tru-Close 600ml Gravity Drainage W/ 36" Tubing is a product of Uresil and is thereby made of the highest quality. If you have any questions regarding Tru-Close 600ml Gravity Drainage W/ 36" Tubing or any product in Uresil (US), please contact us. Our experienced personnel will answer any questions you have about Tru-Close 600ml Gravity Drainage W/ 36" Tubing. Also, if you are interested in purchasing large quantities of Tru-Close 600ml Gravity Drainage W/ 36" Tubing or any Uresil (US), please contact Customer Service.