You are purchasing a complete 60" Gravely HD and Pro Turn Tune Up Kit Kawi Air Filter Pre-Filter Fuel Filter Oil Filter Spark Plugs 2 Quarts of 10w-40 Oil Plus 3-USA Made Aftermarket Blades 20.50" Long .250" Thick 5/8" Center Hole 2.50" Wide This kit fits 60" Gravely HD and Pro Turn mowers with FR or FS engines