The most trusted name in pumping Dr Joels penis pump is a professional pumping system for enlarging the penis and creating harder erections. With a state of the art valve for quick release and a soft sleeve over the entrance for comfortable fit. The chamber is 9 inches in length so should be large enough for most penises. It hand a handy squeeze type hand grip for easy and precise control while pumping, and has a powerful easy to read industrial grade pressure gauge so you know exactly how much pressure is being applied. The Dr Joels Pump cylinder is constructed in a heavy duty clear acrylic material that is hardwearing and reliable so wont let you down.