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This mechanics sonar scope helps isolate engine problems by letting you \'hear\' inside engine.
Quality chromed-steel construction with soft PVC hose and probe
Detectable frequency range: 10HZ--10KHZ
Two Probes included:
the longer one is 200mm long,
the shorter other is 80mm long,
the probe diameters are the same, 4mm.
1 * 1 set stethoscope tools