VIAIR 02495 24V 95C Air Compressor 24 Volt - 120 PSI Max Working Pressure, engine must be running during use. 9 percentage duty cycle based on operation at 72 degrees Fahrenheit and 100 PSI Hardmount unit with omega bracket, includes vibration isolators and hardware. Preinstalled 1/4 inch NPT inline check valve and heavy duty wires Recommended for use with up to 1 gallon air tank