This Tilt wrench is perfect for anyone who owns a standard Tilt hydrometer. Whether you're a homebrewer or a professional in the industry, it comes in handy when you need to change the battery of your hydrometer or calibrate it in water. It's designed to protect the hydrometer's plastic cap and also functions as a bottle cap remover. There aren't any complex technical details to worry about, just a simple and useful tool for your needs.