The OUCH! Urethral sounding dilator set includes four high-grade, phthalate-free silicone dilators designed for urethral play. They can be used incrementally to enhance stimulation and explore new levels of pleasure. Despite their simple appearance, these dilators deliver remarkable sensations, aiding in the development of strong erections and intense orgasms. They are perfect for BDSM activities and medical play scenarios. Each dilator features an insertable length of 35.7 cm, with diameters ranging from 0.35 cm to 0.75 cm for a comfortable progression. Each plug has a square end for easy removal. Warning: Improper use may lead to irritation, urethral tearing, or urinary tract infections. - Size dilators: 3.5 mm - 4.5 mm - 5.5 mm - 7.5 mm - Materials: Silicone