LISLE CIRCUIT TESTER PLIERS -- Draws less than 19 mA at 12 volts DC within operating range of 6-28 volts; Safe for use on automotive computer circuits; Dual probe; Has a polarity indicator; The first probe enables you to check hard-to-reach connections and can be flipped back when not in use while the second probe with centering V design allows you to penetrate the center of the wire; Fits 16 gauge and smaller wire.