This 4.5'' BLUE glass ball comes with copper rings that enable a person to use
them in different ways for different items.They are mostly used for the common
3/4'' weathervane and lightening rods.You can ask any questions if you want,,
and i will respond so that i can help you achieve what you are setting out to
do.PLEASE NOTE IN SOME CASES YOU WILL HAVE TO GLUE OR REGLUE THE COPPER CAPS ON
THE WAY THAT YOU WANT,ITS EASY.HOWEVER THEY COME GLUED ON AS SHOWN.
also if you want one to fit a 1/2'' rod message me when u buy it.these are
mostly used on lightening rods.