Specification Material: Aluminum, Plastic Color: Silver Assembly Required: No Number of Pedals: 4 Power Source: Pneumatic Control Method: Foot Pedal Product Size: 38*35*13cm/14.96*13.78*5.12 in Package Size: 45*40*20cm/17.72*15.75*7.87 in Gross Weight: 3kg/6.61 lbs.