The Optimum Series® Maximum Results pump set includes 2 powerful suction pumps, a detachable hose, and a Master Grip pump handle, all well-designed to deliver maximum results in every session. With each press of the Master-Grip handheld pump, you can look forward to a powerful increase in the girth and length of your penis. Each kit includes one large and one X-large pump cylinders with quick air release levers. The soft, flexible air hose is designed to maintain air pressure even when the hose is removed. To reduce or release pressure, simply press the release lever.