This extra wide cylinder is designed to create a tight seal around both your cock and your balls, powered by our deluxe metal hand pump for maximum results. The vacuum pressure is sure to increase sensitivity and hardness, while amplifying and swelling your penis and balls at the same time The cylinder is designed to retain pressure, even after the pump is removed. The state of the art valve clicks smooth into place, for a nice seal with strong suction. The pump has a foam handle for a secure and comfortable grip, even with slippery hands, and features an easy to read pressure gauge at the top. Measurements: 11 inches in total length, 2.75 inches in diameter Material: Acrylic, metal Color: Clear Note: Kit includes cock and ball cylinder and metal hand pump