Disney Nightmare Before Christmas Jack Skellington Zero Enamel Silver Necklace

For sale is what I think are two separate The Night Before Christmas necklaces. I can't tell if this is one of those necklaces that hook together in one, but I don't think so. I think it's 2 individual necklaces. They are new. They are silver in color with black and white enamel. There is of course, Jack Skellington and then there is Zero with the letter N attached on the same necklace. There is no information on the packaging to tell me how long the necklaces are. Not much else to say. Thanks for looking!