Spark Plug Thread Chaser

This 13/16” hex spark plug hole thread chaser renews both 14 and 18mm threads. Removes carbon and corrosion with a few easy turns. Allows firm seating of plugs and assures metal-to-metal contact for effective heat transfer. Long hex designed to prevent wobble. Neoprene ring holds chaser snugly in socket. Made with heat-treated steel.