| Brand | Flex |
|---|---|
| Type | Compression Tester |
| Maximum PSI | 300 PSI |
Check the listing for details. U.S. General Flex Drive Engine Compression Tester 0-300 PSI Harbor Freight. Condition: New. Listed at 20.00 USD. U.S. General Flex Drive Compression Tester designed to diagnose worn piston rings, valves, and head gaskets. Fits 14mm and 18mm spark plug threads. Type: Engine Compression Tester. Drive Type: Flex hose.