This Mapex 500 bass drum pedal has a single-chain drive with a fully adjustable spring tension. It features a duo-tone felt/ABS plastic beater, footboard with compact stabilizing radius rods, and retractable floor spikes. This kick drum pedal is made of solid steel components and was engineered to be reliable, durable, and, most important, playable. Adjustments are made quickly and easily, keeping you going during gigs night after night.Single-chain drive Fully adjustable spring tension Duo-tone felt/ABS plastic beater Footboard with compact stabilizing radius rods Retractable floor spikes Solid steel components