The Heavy Duty Magnetic Inspection Kit locates surface cracks and many subsurface defects in ferrous metals. Fully protected, moisture-proof switch for ease of use and reliability. Laminated core, polyurethane coated, momentary switch, with 9' power cord and DC Adaptor. 120 VAC, 60 hz., 5 amps nominal or 6/12 volt DC. Measures 8" x 2-1/2" x 6-3/4". Lift strength AC 12 lbs., DC 40+ lbs. Carrying case included.