Increase your penis length and girth with this Precision Pump Advanced 1 Penis Pump by California Exotic Novelties. This professional grade vacuum pump comes with universal incremental measurements so you can pump to your precise requirements. It features pressure release valves on the pump and the cylinder to easily release the pressure when you so desire. The professional vacuum pressure gauge will keep track of your pressure so you can pump just the way you want to. It features a flexible non-crimping air hose, flanged cylinder base for secure vacuum seal and a tapered removable Silicone secure fit donut. The removable air hose detaches while maintaining suction. It's made from the following materials: PS (cylinder) Phthalate-Free PVC (hose) Silicone (donut) PU (handle grips) ABS (pump release button, disconnect valve) Copper and Silicone (handle, release button) Iron (handle) Iron and Copper (gauge) Iron and POM (disconnect lever). This pump is great for serious penis pump users who want to see some serious results in their pumping regime.