The stethoscope is simple to use, making it accessible for both experienced mechanics and beginners. To use, simply place the diaphragm on the engine component you wish to inspect and listen through the earpieces. This straightforward method allows for quick and accurate detection of engine noises, saving time and effort in the repair process. Features -Color:Multi -Material:Stainless steel, plastic -Size:34.00X24.00X2.00cm/13.36X9.43X0.79in -Detection frequency range: 10HZ-10KHZ -High accuracy detection: precisely identifies abnormal sounds in engine cylinders, facilitating accurate detection -Universal compatibility: suitable for engine inspection and repair of various car brands and models -Portable and easy to use: designed for simplicity and portability, making it convenient to carry and operate -Efficiency improvement: speeds up problem identification, enhancing overall work efficiency -Sturdy and dependable: made from robust stainless steel and plastic, ensuring long term use Package list: 1 x cylinder stethoscope