Features: The MD2509 Cylinder Compression Tester offers a cost effective solution for precise 0-300PSI pressure measurement, featuring metal construction and broad compatibility with gasolines engines like motorcycles, car, ATVs, and lawn equipment. Equipped with a double color scale gauge and ±1.6% accuracy, this compression test kit includes a builtin check valves for maximums spark plugs pressure readings and adapters for varying spark plugs depths. Ideal for automotive technicians, DIY enthusiasts, and small engine repair specialists seekings reliable diagnostics for motorcycles, SUVs, snowmobiles, chainsaws, and other gas power machinery. Perform quick engine health checks in garages, workshops, or outdoor setting using the storage case and 3.5inch easy to read gauge optimized for low light environment. Its corrosion resistant rubber hoses and small size design ensures good performances during frequent on site diagnostics, while the spark plugs adapters simplifies testing across multiple vehicle types. Specifications: Component:Metal,ABS Measurement: 0 - 300psi Package Includes: 1Set Compression Tester note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color.