Saves time when trouble shooting, pin-points noise and locationAmplifies sound while shutting out surrounding noiseNon-conductive microphone will not zap computer circuitryFlexible shaft reaches the tightest areasPin-points noise and location of worn bearings & bushings, noisy valves & lifters, broken or worn gear teeth, faulty fuel injectors, wind or air leaks, annoying squeaks and rattlesCarrying case included








