The UR3 Cock and Balls is no imitation. It's the real thing, molded directly from an erect penis, than hand painted to insure every detail is true to the original. Now this incredible UR3 cock is available for the patented Vac-U-Lock system. A unique locking device that uses the science of a vacuum to hold each piece tightly to one of 3 available Vac-U-Lock products. These devices include the Ultra Harness 3000, the Easy Rider Ball, and Ultra Harness 2 (all of which include the ingenious plug which is what makes this all possible). The product inside this box is compatible with all three devices mentioned above. This cock is only one of many attachments available that are interchangable with the Vac-U-Lock system, a new state-of-the-art strap-on system that features an adjustable waist(up to 44 inches) an open crotch for maximum comfort, easy access and non-slip action, designed to give you command and control of your next erotic adventure. Strap-on system not included.