Features: Effectively locates trouble Within engine block. Quickly diagnose abnormal noises in car engines, accurately locate problems, and save maintenance time and costs. High sensitivity stethoscope head, sturdy design, equipped with long probe, suitable for use in various car models. Usage:The cylinder stethoscope provide a quick and easy way to identify problems in bearing motors and other moving parts. Application:It can diagnose the engine, cylinder and more for car, truck, motorcycle. Specifications: Material:Stainless Steel Package Includes: 1Set Car Stethoscope note: 1.Please compare the detail size with yours before you purchase. Thanks!!! 2.Due to various types of computers and monitors,the actual color may be a little different form the picture. 3.Please allow 1-3cm difference due to manual measurement.Thanks(All measurement in cm and please note 1cm=0.39inch 1inch=2.54cm)