Have 7 tubes of 25mm medium wall and 2 tubes of 32mm med. I bought it in 2001 at American lab. supply in Richmond California. I've been moving it around for 11 years because I never use that size anymore. I don't have any box or receipt, but that's all I used(Duran) until it was discontinued. You will know its the real deal when you pull the first point. Offers?