Specification:Material: Stainless steel + plasticWeight: 140gPackage includes: 1*mechanical stethoscope,1* extension probeTotal length: 34.6 inchesProbe length: 3.2 inchesExtension probe: 8.6 inchesDetection frequency range: 10HZ-10KHZProduct Advantages--Durable, made of stainless steel and ABS plastic, strong, durable and long life.--Anti-vibration construction makes work safe and secure, comfortable rubber earplugs reduce outside noise--Easy to use, just put the earplugs into your ears and track to the loudest part of the motor.--Diagnose a variety of engine problems, identify broken gaskets, damaged gears, defective valves and other damaged parts. Or detect faulty operation, such as bad pulleys and water pump failures
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