This vintage US General Flex Drive Compression Tester is a professional quality tool that can measure up to 300 PSI. It is designed for use with gasoline engines and comes with its original box. The unit is sold as a single item and has no warranty. The compression tester is manufactured in China and has a maximum PSI of 300. It is suitable for use with various units and has a manufacturer part number of 92697. This item falls under the category of eBay Motors and Automotive Tools & Supplies, specifically Diagnostic Service Tools and Compression & Vacuum Testers.