1Accurate and Reliable Measurement: The petrol engine cylinder compression tester kit ensures precise and dependable cylinder pressure readings for a wide variety of vehicles. 2Versatile Use: The engine compression tester kit is applicable for most types and depths of spark plug fuel engine cylinders on gasoline, suitable for motorcycles, cars, ATVs, snowmobiles, SUVs, lawnmowers, chainsaws, and more. 3Durable and User Friendly: Made with high-quality metal and rubber materials for durability, this engine cylinder compression gauge tool is designed for effortless operation by both professionals and DIY enthusiasts. The built-in check valve with a pressure holding feature guarantees maximum pressure at the spark plug during compression. 4Clear and Easy to Read: The petrol engine cylinder compression gauge provides clear visibility of precise readings within the 0 to 300psi range, allowing for easy reading even in dim conditions. 5Portable and Compact: The petrol gas engine cylinder pressure gauge comes with a storage box, making it compact and convenient for easy transport. Ideal for professionals or hobbyists on the move.