Ethox Infu-Surg Pressure Infusion bag prevents over inflation (330 mmHg pressure relief). The large, oval shaped bulb allows for quick and easy inflation of bladder. Single-handed inflation and deflation design makes it easy to use and requires minimal training. Suitable for use with external inflation sources. Color-coded gauge makes for accurate pressure monitoring (0-300 mmHg). Three-way stopcock ensures precise control of pressure. Incredibly reliable - 100% tested. Loads quickly and easily. Comes with hook.