As quoted in MODERN DRUMMER:
"The Firefly is a quick-action tuning device. It resembles a standard drumkey, but looks are deceiving. The ergonomic back handle in the middle of the Firefly covers a cam clutch bearing that permits precise ratcheting without the annoying "clicks" of a standard ratcheting key. The ratchet pushes only one direction, you loosen or tighten the tuning bolts simply by turning the key over. The ends of the key are knurled, making it easy to "spin" loosened bolts on or off the drum. The handle acts as a "flywheel" to provide centrifugal force. The Firefly definitely makes changing heads a faster process than with a traditional drumkey. Tuning is also more precise, due to the extra fine, supremely quiet, and almost imperceptible internal ratchet. Plus the device comes in a tough, see though plastic case. What more could you ask for?"
