SUNDELY 24V 3 Liters Air Compressor Tank Kit for Train Horn 150 PSI with Built-in Auto Pressure Switch 24 Volt 3 Liters Air Compressor Pump Tank Kit for Vehicle Car Truck Horn 150 PSI with Built-in Auto Pressure Switch Dimensions: 15" L X 5.5" W X 7.4" H, Tank Capacity: 3 liters Max Working Pressure: 150 PSI, Auto pressure Switch Settings: 70 PSI on, 105 PSI off Clear air tube length: 490cm (appr.193") Mounting hardwares included (as shown in pictures)