Gibraltar GRC5-DB Road Class Double Bass Pedal Single Chain Drive Drum Pedal. The Gibraltar GRC5-DB Road Class Double Bass Pedal is designed for optimal stability, style, speed, and agility in a compact design. With a sleek and curved G-Class pillar-style frame, these pedals offer both simplicity and functionality. The single-point beater adjustment allows for easy placement of the beater, while the patented spring rocker arm and single chain cam drive provide effortless speed and agility for the player. To ensure a quiet recording experience, a felt silencer is included to muffle any unwanted noise from the spring. The side mount hoop clamp from Gibraltar also allows for easy addition and removal of the pedals from the bass drum.