The GP Percussion Pro-Quality Double Bass Drum Pedal features chain drives and multiple-style beaters. It contains mostly cast parts including the base and pedal for durability and stability. Both of the beaters of this double bass pedal can also be used on a single pedal for heavier hitting and a more resonant sound. It has a linkage that adjusts from 15 to 22.5 to suit a variety of bass drum setups comfortably. This double drum pedal is a good option if you re thinking of expanding your set to include a secondary bass drum. It is also excellent if you need a replacement or backup drum pedal.