The US General 94190 Cylinder Leakage Leakdown Tester Kit is a high-quality compression tester designed for automotive use. This kit includes a carrying case and features multiple measure scales for accurate testing. Manufactured by US General, this product is a reliable tool for diagnosing cylinder leaks and ensuring optimal engine performance. Perfect for mechanics and car enthusiasts looking to maintain their vehicle's engine health, this kit provides essential functionality in a convenient package. Writing on the side in sharpie