The FIRE FLY dynamic tuning device is perhaps the most innovative and efficient drum key ever made. Its 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 a ergonomic handle for users comfort and is equipped with knurled ends for lighting fast head changes. The FIRE FLY is cnc machined for long life and durability.