The SNAP-ON TOOLS 4 PIECE COMPRESSION TEST KIT MT308KB is a high-quality diagnostic service tool designed for automotive use. This kit includes four pieces of compression test equipment, allowing mechanics to accurately measure the compression levels of engines for proper performance and troubleshooting. With the trusted SNAP-ON brand, this kit ensures reliability and precision in testing engine compression. Ideal for professionals and car enthusiasts looking to maintain and diagnose vehicle engines efficiently.