Lisle 20530 10mm Spark Plug Adapter for Compression Tester Other Metalworking Supplies depending on the attachment you

depending on the attachment you choose

SK Hand Tools 34274 1/2" Dr

Best-in-class performance

3/4" Fractional Hex Bit Socket #41224

Designed to apply consistent pressure to the end of a pin

Lisle 20530 10mm Spark Plug Adapter for Compression Tester Other Metalworking Supplies depending on the attachment youThe 20530 is a 10mm thread adapter. Adapts to M14X1. 25 6H Threads.?? The Lisle 20530 Spark Plug Adapter is a replacement adapter designed for 10mm spark plugs and is compatible with the Lisle Compression Tester # LST 20250. It comes with an O ring for a secure fit and accurate compression readings.??One reviewer says this fitting works perfectly when attached and provides plenty of threads to complete a test.