Single circuit battery master switch. Includes 2 detachable keys for anti-theft protection & isolates battery circuit. 2 position on/off with removable keys, 3/8”x1/2” length studs & 2 3/16” mounting holes. Maximum load (5 seconds): 12 Volt @ 500 AMP DC Momentary, Maximum Continuous Rating: 12 Volt @ 100 AMP DC Continual. Ideal product for automotive, RV, marine & farm equipment. Instructions Included.