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 set of 4 twisted extra long probes have smooth pointed tips for easy insertion. The flat rounded head allows for safe and easy extraction. Made from super-smooth medical grade, phthalate-free silicone these probes have a total length of 30cm (6.1") to go extra deep! They have an insertable length of 29.6cm (11.65") and 4 different diameters measuring 0.3cm (0.12"), 0.4cm (0.16"), 0.5cm (0.2") and 0.6cm (0.24"). Always use with a generous helping of sterile water-based lubricant and insert slowly and incrementally for maximum pleasure.