Description Are you looking for a professional, yet reasonable ignition coil tester? Are you in search of a sturdy, trustworthy tool that can do multiple jobs at once? If yes, look no further! Our coil pack tester must meet your needs, this ignition coil tester is one of the best choices for you. Features - ColorRed - Material:ABS, LED - Size: 7.00X7.00X1.00cm/2.75X2.75X0.39in - Wrap the detection card onto ignition lock, turn on the key, the light on coil means you car functions normally. - When the LED light on the detection card means Electronic Control Unit is not working normally. - Simple detection, no need for exclusive tool, fast and convenient to use. - With this simple detection coil without people professional in high-end equipment can be test the operation of the vehicle. - Simple and delicate, excellent and reliable, carefully crafted, not easy to deform or break due to the high hardness. 3 coils