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The OEMTOOLS Spark Plug Gap Gauge measures spark plug gaps from 0.020" (0.50 mm) to 0.10" (2.5 mm). A hole in the gauge works as an electrode adjuster. This gauge features inch sizes stamped on the front and metric sizes stamped on the back. Attaches to your key chain for easy access.Warning - This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm.
