Listing for 4 cups. This is a glass bottom that goes to a basket chandelier or sconce. Chains of crystal hang down and attach to it, so it's kind of a bottom finial or finish to the piece. These have not been drilled with holes. I have a whole box of them so just ask for quantity.
(you need a special glass bit for your drill and it helps if it's wet but don't just put a regular drill under water, that could be bad)
In any case, I have seen a lot of crafters who do candle things, and things with glass bottles, and these could make very cute lids for cut off wine bottles. The inside diameter is 3 to 3 1/8th. and they are about 3" to 3 1/4" high. All clear glass, filed on the bottom edge.
The sale is for FOUR, I have a bunch. I will make a special listing for you if you want more than one, just write me!