Expert Quality, diagnostic circuit and component probe, used to reduce diagnostic times in vehicle electronic systems. Easy to use, just hook-up to the vehicle battery and you're able to determine if a circuit is positive, negative or open. Capable of continuity testing, conduct positive or negative battery current analysis, carry out instant ground tests and much more. Supplied with 2 x probe tips and approximately 6 metres of cable and stored in a high quality plastic storage case. Display packed.