These large square cup are made of pure copper and adds a distinctive "slotted" cutout design. With a folded lip along the top for stiffness, each cup is individually welded together by hand. The heat of the torch adds the unique coloration (aging effect); this is not a chemical coating or paint. This chain looks a hundred years old right out of the box! Will easily handle heavy rain. To prevent damage in transit and reduce packaging volume, the upper wires are shipped separately from the cups, so some assembly is required -- it takes just a few minutes with no tools. Comes with a copper V-hook for easy installation. Also available: RCR-1 Installation Kit. Standard length is 8 feet for this rain chain.