Our hand pumps are designed for use as part of our natural enlargement systems. Depressing the lever of the hand pump removes the air from the cylinder or cup to create a vacuum, which causes blood to flow into the area and stimulate growth. This hand pump works silently so its very discreet. It is constructed from the highest quality materials and can be used on the breast, buttock, nipple and penis enlargement system. Our hand pumps comes with a 1 year warranty. You can use them to create your own breast, nipple, buttock or penis pump system in conjunction with our selection of components including tubing, tee piece kits, cups and erection rings, all available to buy separately.