Copper miters are the gutter fittings that are used to connect two pieces of gutter at a corner. We carry several different types of copper miters for both k style and round round copper gutter systems. All of our copper miters are made from 16 oz. copper and will develop the same beautiful patina as the rest of the copper gutter system. Copper is always recommended to be soldered but miters can also attach to the gutter with copper rivets and gutter seam sealer.