Zinc came is used to frame out and add strength to the piece. Please note this stained glass is constructed using the Tiffany copper foil method. This means each piece is individually cut and smoothed with a grinder. Then each piece is covered, on the edges with copper foil, pieced together and soldered.
If you need chain and hooks for your window or just chain, please look for that in my other listings. I have various lengths available and can custom cut for your needs.