Hydroxtreme8 Penis PumpTake your hydrotherapy to a whole new level with the worlds most powerful penis pump. Advancing Hydropump design to a new level, with a new valve and detachable handball, the Hydroxtreme Series is the Hydropump for the man who is serious about getting the very best from his pump. The Hydroxtreme Series comes complete with all the accessories you could ask for. The Hydroxtreme8 is designed for a user whose penis is 6 8" (15 20cm) when erect.