The Stainless Steel Hinged Grid from PK is made from 304 Grade Stainless Steel. Borrowing a quote from Meathead Goldwyn, "Because it contains more nickel and less steel in the alloy, 304 is higher quality and higher cost" (than the more common 430 stainless). You will find 304 grade stainless in many of the new and forthcomingPK accessories. This unique hinged cooking grid replaces the stock nickel-steel grid. It incorporates heavier gauge wire a reinforced hinge with vertical stop (so it doesn't fall back on your food) and a handy lift tab on the hinge side to make it easier to open and close with a pair on tongs or gloves on. Everyone who owns a classic PK Grill & Smoker will want to upgrade to this cooking surface.