The Smokeware Stainless Steel Chimney Cap is sold as a replacement for both the standard issue ceramic cap and the dual-function metal top (daisy wheel). It is a two-piece design that uses a fixed base and a rotating cap that can be adjusted through a wide range of openings to control the air flow and cooking temperature.
Stainless steel won’t rust or break like cast iron can. In addition, The fit is snug enough that the vent opening doesn’t change (thus throwing off your temperature) when opening and closing the Egg.
The overhang on the top lets you cook even when it’s raining, and can be left open when it isn’t being used to prevent mildew from growing inside your Egg.