Pearl changed the game with the introduction of the Eliminator Demon Drive Pedal in 2009. Now in 2013, Pearl introduces the P-930 bass drum pedal. Featuring the industry leading characteristics of the award winning Demon Drive pedals, the P-930 is a wonderful addition to the Demon Drive family. Single Chain Perfect Circle Cam w/ Removeable Eliminator-style Eccentic Cam Demon Style PowerShifter Function Longboard Dual Surface Beater w/ Control Core Infinitely Adjustable Beater Angle FrictionLess Roller.