COSMOS Pack of 8 Assorted Colors Fish Shape Drink Markers & Wine Charm Tags for Stemless Glasses, Beer Mugs & More (Fish) Set of 8 wine glass markers with different colors Unique & cute fish shape design Fun, entertaining way to distinguish your wine and drink glasses Perfect for parties, cocktail hours, dinners and more Easy to use and slip on wine glasses - stays in place. The hole diameter is about 8 mm.