Auto Mechanic Tech Stethoscope Diagnostic Noise Sound Test Tool Find and Locate Trouble by tracing and pinpointing Noises with this invaluable diagnostic tool. Identify piston slap, worn gears, faulty valves, water pump failure, damaged gaskets, defective bearings Shockproof handle acoustic chamber Soft pliable rubber audio tubes, soft ear tips Two-piece probe reaches 11-3/4"