The Stiff and Strong Manometer Penis Pump is a product designed to help men achieve and maintain an erection. This penis pump works by creating a vacuum around the penis which increases blood flow and can result in a stronger and harder erection. The pressure gauge on the pump allows you to monitor the pressure used during pumping so it can be adjusted according to individual preferences and needs. The pump is designed to be safe and easy to use.It is important to note that results may vary from person to person and it is recommended to follow the instructions for use carefully and pay attention to your own body signals during use.InformationBrand: Stiff and StrongType: Penis pumpMaterial: ABS PVC & siliconeDiameter: 5cmLength: 21cm