The cavity will allow urine or semen to drain.
The electricity goes deep into the body.
The dilator consists of only 1 pole. The other pole is a separate ring with a cable (not pictured). But this is rather an emergency solution. The second pole should be solved with another electrical device, e.g. an erection ring or a washer.
Functional only when connected to a compatible electro set and cable see linked products.
Funny Steel, CE Certified, Steel, PVC, 21g,
gel, water or oil base (not silicone), cleaning with rubbing alcohol
see more in the article Urethral play