TMS Percussion Drum Pedal Double Bass Pedal Foot Kick Drum Set Percussion Dual Pedal Single Chain Drive Percussion Double Bass Drum pedal Twin Hardware Durable single steel chain drives Friction-less bearing hinge Smooth and fast rebound fully adjustable jointed hinge system spring tension and 3-position stroke adjust ability 2-way beater with adjustable angle Triple springs adjust ability Adjustable stabilizer and detachable bottom steel plates Comes complete with tuning key. Distance between both pedals: Adjustable from 20" to 27" (center of pedal to center of pedal.) Base plate measurement: 13"x 5 1/4" (each side) The double pedal creates fast and solid double cam action with effortless execution. These high quality pedals are perfect for all levels from beginner to advance. The full adjust ability on these pedals create a unique customized fit catering to your specific style and needs.