The Precison Pump with Erection Enhancer is a one step Penis Enhancement System that allows you to pump it up and keep it up. The high quality bulb comes with a quick release purge valve.
A penis pump is a cylinder that is fitted over the penis, with a manual or motorized pump to create suction. As the apparatus creates a vacuum around the penis, blood is drawn into the penis, helping it to become engorged. As vacuum increases, the difference between the inner blood-pressure and the pump pressure increases as well.
Flexible compression rings, commonly called cock rings, can be added. Fitted on the open end of the cylinder, then an erection is created by pumping. Then the rings are pushed by hand onto the base of the erect penis before releasing the vacuum. This restricts blood flow, enabling the erection to be held even in the presence of problems of the vascular or nervous system which would otherwise lead to immediate loss of erection.
Erections can be maintained for a considerable time, but manufacturers’ literature recommends that, for safety, rings should be removed after no more than 30 minutes. Penis pumps, also known as vacuum pumps, have use in conventional treatment of impotence.
For this pump, slip the erection enhancer ring onto the base of the pump. Once erection has been produced, slide the ring onto the base of the penis, which will help maintain your erection as you bring pleasure to your partner. Easy grip handles on the ring allow for easy removal.
Purchase this Pump for $20.95 at 4PlaySexToys. Lubricant Included.

Has anyone ever tried this pump? The price is good, but want to know if it works.
Any pump with suction will work. You just have to keep stretching the blood vessels so the next time more blood can flow in. So I guess this will work.