Change your Tilt hydrometer's battery with ease. The Tilt wrench is a tool for removing the cap so you can change the battery or calibrate your Tilt in water. The rubber over-mold keeps the plastic cap scratch and dent free while the handle gives you leverage to remove even the hardest to-turn caps. As a bonus, the product doubles as a bottle cap remover. Does not work with the Tilt Pro hydrometer.