2-way beaters can be used together or one on each pedal. Single Chain? Our double drum foot pedal is with single chain drive, smooth and responsive, provide you light feel and intuitive power transmission from footboard to beater. Sturdy Connecting Drive Shaft? Double Kick Drum Pedals provide stable and durable power transmission from slave pedal to beater. Easily bring you a full, powerful, rhythmic sound. Non-slip Design? There is a non-slip rubber pad at the bottom, which can increase the friction and prevent the pedal from sliding. Easy to Use? The double bass drum pedal is easy to install, with little adjusting out of the box. Suitable for more drummers, jazz drums and electronic drum lovers to practice drum pedals.