The Ouch! Uretrhal SOunding dilator Set is comprised of 4 phthalate-free high-grade smooth medical silicone dilators, which can be used incremently for uthrethral play. They can be used to create immense stimulation and to gradually open up new realms of pleasure. These simple looking dilators can produce incredible sensations and help build up strong erections and powerful orgasms. They are ideal for BDSM play and especially for creating medical play experiences. Each of the dilators has an insertable length of 35.7cm while the diameter goes from 0.35cm to 0.75cm for a gradual comfortable increase. WIth square ends for easy extraction.