The Snap-on Compression Gauge Set MT308KB is a high-quality diagnostic tool designed for passenger vehicles with gasoline engines. This set includes a compression tester with a maximum PSI of 250, perfect for accurately measuring engine compression. The set also comes with a carrying case for easy storage and transportation. Made in the United States, this product is a reliable and durable accessory for any auto mechanic or car enthusiast looking to check and improve engine performance. Item comes just as pictured. If you have any questions please contact me. I usually ship day after payment clears. If you have any issues please contact me before starting a return. My #1 concern is customer satisfaction. Thanks for looking!