Robokey Gear Drive Drum Key The RoboKey GearDrive quadruples your wrist turning speed to robotic performance, zipping out those long drum screws and making head changing less of a head ache The RoboKey 4X is a GearDrive drum key that increases turning speed 4 times or more Without adapters to lose, and constructed of hardened tool steel & machined gears, it's a gadget that will be a standard drum tool for years to come It's the only drum tuning and maintenance tool of its kind More speedy than a simple T-wrench, crank or ratchet, the patented RoboKey increases every turn of your wrist, taking the frustration out of removing it and making drum maintenance easier