Ouch! Introduces a new line of toys for urethral explorers! Ifurethral sounding is your kink, then let these smooth probes deliverthe ultimate pleasure! The urethra is lined with super-sensitivenerve endings, which can be extremely pleasurable when stimulated.additionally, deep urethral play is the only way to directlymassage the prostate. ouch! Has a variety of urethral soundingprobes for beginners as well as advanced users! This vibratingmodel delivers the best of both worlds! The rounded tip allowseasy insertion and the ribbed balls" give extra stimulation. theprobe comes with a single vibration mode going up to a staggering12.000rpm but is ultra quiet at less than 50db. it takes one (included)aaa battery. made from super-smooth medical grade,phthalate-free silicone, this toy has a total length of 21cm (8.3")with an insertable length of 11.2cm (4.41"). the diameter variesfrom 0.55cm (0.22") to 0.7cm (0.28").