Lisle 20530 10mm Spark Plug Adapter for Compression Tester Single Use Batteries Speed Range Low (rpm): 400

Speed Range Low (rpm): 400

Coast Products

Flexible Automotive Back Probe Pin Set #142-5

Made of very strong plastic

HOOD PROP ROD - 16" to 40"

Lisle 20530 10mm Spark Plug Adapter for Compression Tester Single Use Batteries Speed Range Low (rpm): 400The 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.