DW 9000 Series Pedals feature an infinite adjustable cam, allowing the pedal to be easily set from Accelerator™ to Turbo™ Drive or anywhere in between. Patented features like the free-floating rotor-drive system, rotating swivel spring and infinitely adjustable cam, are aligned to create a more direct transfer of energy that optimizes the stroke for more power and precision. (U.S. Patent No. 6590147B2)