Designed to clean and test all 14mm & 18mm massive and fine-wire electrode aviation sparkplugs. Cleaner uses dry-abrasive air blast which quickly and effectively removes conductive deposits. The "solid state" ignition system produces very stable ignition test voltage for greater accuracy and reliability. Contains built-in automatic water trap. Size: 11.5"hx16-3/8"wx12-1/8"d. Req. 125-180psi compressed air and 115/230V 50/60 Hz AC. Power consumption: 35 W.