http://tinyurl.com/qxx4459Champion Copper Plus Small Engine Spark Plug, Stk No. 872, Plug Type No.RDJ7Y (Pack of 1)Product Review Click on the link for more reviewsChampion copper plus small engine plugs resist fouling and provide superior corrosion resistanceChampion copper plus small engine spark plugs feature a copper core electrode that provides increased conductivity and heat control while delivering good overall wear characteristicsChampion copper plus small engine spark plugs are built by a world leader in small engine spark plugs to deliver proven performance