SUNDELY&reg; 12V 3 Liters Air Compressor Pump Tank Kit for Vehicle Car Truck Horn 150 PSI with Built-in Auto Pressure Switch 12 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: 100 PSI on, 125 PSI off Clear air tube length: 490cm (appr.193") Mounting hardwares included (as shown in pictures)