Petrol Engine Compression Tester Set is a must-have tool for every auto mechanic and DIY enthusiast. Our factory's product is made of high-quality materials that are durable and easy to use. The set includes everything you need to check the compression of petrol engines, such as spark plug adapters and a gauge with a range of 0-300 PSI. With this tool, you can quickly identify engine problems such as worn piston rings or leaking valves. The gauge is easy to read, and the rubberized gauge protector ensures that it will last for years to come. Whether you're working on a car, truck, or motorcycle, this compression tester set is essential. Choose our factory's product and get the job done right every time!