Black color finished, durable single alloy chain drives, frictionless bearing hinge. Smooth and fast rebound, with adjustable jointed hinge system. Pedals adjustable, stable metal plate on left pedal, carpet floor spikes preventing slippage. Fast and solid double cam action with simple execution, adjustable stabilizer. Springs adjust ability, plus spring tension and stroke adjustment. Comes completely with drum tuning key. 33.5 16.5 23 cm / 13.2 6.5 9.1 in. 2 Drum Pedals 2 Drumsticks 1 Connecter 1 Drum Key.