The Super Rotomatic® has a 14:1 gear ratio. The 3 step button gives this machine a distinctive look and the sealed-in lubrication assures smooth gear-and-worm movement for the life of the machine.
Distinctive in styling and quality, the Imperial made it's first appearance in the 1970s. The most notable feature of this unique machine head is the futuristic Three Step button, a fresh and funky design trademarked by Grover. This re-introduction of the Imperial is an exact reproduction of the originals, including a 16:1 gear ratio.