Male urethra from the orificium urethra internum of bladder to orificium urethrae externum of penis, adult urethra is in between 16 - 22cm, the diameter is in between 5 - 7cm. Male urethra consists of prostate, pars membranacea and spongiose part. 
This model is mainly designed for teaching male genital structure and simulating the male catheterization, not for real urethral catheterization training. The model comes with a red plastic tube to demonstrate the route of male catheterization. If you are looking for a catheterization model, the Komed  Advanced Portable Male Catheterization Model would be more suitable.