Griddle/Hotplate insert, flat on one side and ribbed on the other. With draining hole and opening for iron grid handle.Grill your steak on the ribbed side, roast your onions on the other. Also good for hamburgers, fish, and vegetables. It offers efficient heat distribution and retention and keeps food warm longer. -heavy cast iron plate -flat on one side and ribbed on the other -draining hole -preseasoned with soy oil, grate quarters can be replaced with various available inserts -last a lifetime if cared for properly -fits the 26.75” cast iron grate