OUCH! Introduces a new line of toys for urethral explorers! If urethral sounding is your kink, then let these smooth probes deliver the ultimate pleasure! The urethra is lined with super-sensitive nerve endings, which can be extremely pleasurable when stimulated. Additionally, deep urethral play is the only way to directly massage the prostate. OUCH! Has a variety of urethral sounding probes for beginners as well as advanced users! This vibrating model delivers the best of both worlds! The rounded tip allows easy insertion and the ribbed "balls" give extra stimulation. The probe comes with a single vibration mode going up to a staggering 12.000rpm 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 varies from 0.55cm (0.22") to 0.7cm (0.28").