The Pittsburgh Automotive 62622 Quick-Connect Compression Tester is a 4-piece kit designed for automotive use. This compression tester features a quick connector for easy attachment and a pressure release button for convenient release of pressure. Manufactured by Pittsburgh Automotive in China, this kit includes all the necessary accessories to accurately test compression levels in engines. The kit does not include any modified items, making it a reliable and authentic product for automotive maintenance and troubleshooting.