Our Brass Weld Ferrule's are an inch in length and are perfect for soldering, brazing or welding to any 2" copper distilling column to mate to your keg or boiler. Other ferrules that are made of copper floating around the Internet fit the inside diameter of the copper pipe and since every type of copper has a different inside diameter they fit only one type which is the thinnest copper available DWV pipe. Our ferrules are superior because they fit on the outside diameter of 2" copper and since the outside diameter of copper types M, L, K, and DWV are all the same ours will fit ALL types of 2" copper pipe.
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