Used Tempest UREM40E spark plugs. These have approximately 100 hours on them from an airworthy Cessna 172. There is some corrosion on the outside of the barrels, but the electrodes look pretty good. Although not pictured, 12 used copper gaskets are also included. This is a full set of 12 plugs. If you only need 8, message me and I can adjust the listing. Buyer to determine final airworthiness. Sold as is.