This 4" KegLand Tri-Clamp adapter adapts a 4" Tri-Clover Fitting to a 2" Tri-Clover Fitting. Perfect for adapting a Kegmenter to a distilling column. Needed 4" and 2" Tri-clamps are not included. 303 Stainless. You will not need any gaskets if you already have a Kegmenter with its 4" Tri-Clover Gasket, and a B78 or B79 Kegland Still with their flat silicone gaskets. Fits all size Kegmenters.