Big Dot of Happiness DIY Graduation Cap Bottle Toppers - Hat Shaped Party Decorations - 12 Count Do-It-Yourself Graduation Cap bottle topper kit includes everything you need to make 12 mini graduation hats Graduation bottle toppers will fit standard bottles, such as soda and water, less than 1  diameter Graduation bottle toppers measure 1  diameter at the neck, and 2 across at the square top A Glue Gun and some assembly is required - One set of 12 DIY graduation hats will take about 20 minutes to complete