FireFly Drum Key (More photos below the video) Price: $14.95 The Firefly dynamic tuning device is perhaps the most innovative and efficient drum key ever made. It's primary feature is the use of a cam clutch bearing. This type of bearing allows the user precise ratcheting minus the annoying clicks and play of a standard ratcheting key. Its features an ergonomic handle for the users comfort and is equipped with knurled ends for lighting fast head changes. The Firefly is CNC machined for long life and durability. There are many tuning methods for tuning a drum. If you have any questions, please feel free to contact us directly. Email Us: