This Professional Cylinder Engine Compression Tester Pressure Gauge Test Kit Motor is the perfect tool for diagnosing the compression level of your motorcycle, ATV, passenger vehicle, or heavy-duty/commercial vehicle. It features a durable design and is made of alloy steel, plastics, and rubber materials. The kit includes a carrying case, fittings, and pipes for easy and convenient use. The gauge scale ranges from 0-300 PSI and 0-20 kPa, making it suitable for a wide range of vehicles. the maximum PSI is 300PSI. This compression tester is manufactured in Taiwan and is ideal for diagnostic service tools.