This excellent product replaces the standard daisy wheel and porcelain cap that comes with your Big Green Egg. Fits the medium, large, and XL eggs. Welded 304 grade stainless steel which will not rust for an all-weather cap. Included is a roll of high-temperature felt used to create a gasket that securely holds the cap in place when opening the lid to your grill. Maintains vent settings each time you raise the lid. A tapered vent design allows for precise low temperature control.