Hign-concerned Chemical:NoneOrigin:Mainland ChinaItem Type:Cylinder StethoscopeFunction:Car Cylinder StethoscopeMaterial:Rubber Plastic Stainless SteelProduct Type:Diagnostic ToolsProfessional Automotive Mechanics Stethoscope Car Engine Block Super Sensitive Diagnostic Tools Auto Tester Analyzer Feature: 1. Function: Ideal for identifying car engine problems by identifying damaged washers, damaged pulleys, damaged gears, faulty valves, faulty water pumps and other damaged parts that cause strange noises and faulty operation. 2. Sensual Noise Sound Source: It has a sensitive sound chamber that amplifies the sound, allowing you to easily detect damaged parts inside the engine. 3. Ease of use: The tool's ear button allows you to ignore outside noise and focus on detecting problems. 4. Easy to spot the problem: Just find the loudest place and make contact between the probe and the surface to confirm. 5. Shockproof handle: The handle makes the work safer. Comfortable rubber earbuds provide perfect isolation from outside noise. 6. Multitool: Perfect for transmission, transfer case, valve train, rear axle and engine. Specification: Material: plastic and stainless steel Probe length: about 30cm Probe diameter: about 3.3 mm Weight: 0.15kg Detection frequency: 10hz-10khz Package Contents: 1 * Engine Analyzer Product Type: Diagnostic Tool Package Contents: 1pcs * Engine Analyzer Note: 1.Transition: 1cm=10mm=0.39inch 2.Please allow 0-3cm error due to manual measurement. pls make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!