Goodall 300 Amp 12 Volt Start-All with 8 CFM 155 psi air compressor. Voltage is regulated to protect on-board electronics. Unit includes anti-zap voltage surge protection and 30' of 2-gauge welding cable to allow access to vehicles. Polarity and Low Battery LEDs confirm proper connections. Engine is Briggs & Stratton OHV. 23" Long x 27" Wide x 26-1/2" Tall. Order GDAL-61-130 vertical or GDAL-61-131 Horizontal Air Tank Separately.