Sklar's Silicone Vaginal Dilator Set contains four dilators that can be used prior to surgical procedures and examinations, for sexual rehabilitation following treatment for cancer, or for treatment of pelvic floor disorders such as vaginismus. Sklar offers three different sets of four dilators identified as small through extra large within the set. This product is the set of medium sized dilators. The small dilator has an overall length of 75mm and outside diameter graduated from 12.5mm to 17mm. The medium dilator has an overall length of 78mm and an outside diameter graduated from 19.5mm to 23mm. The large dilator has an overall length of 86mm and an outside diameter graduated from 22.5mm to 28mm. The XL dilator has an overall length of 95mm and an outside diameter graduated from 26mm to 33mm.