In addition to having an ergonomic handle for comfort, a knurled knob for easy skin changes, and a non-slip magnetized skin, the torque wrench handle can be preset to release at a specified tension, ensuring an even adjustment every time. ear. Evans quickly grew into the Drum Key Company, offering a diverse selection of models with unique features, all of which are guaranteed for the life of the product. Each key has its own unique character and was designed to be a practical solution to a common problem.