Compatible with: Any 14mm Size Bowl Rub-a-dub-dub. Introducing the Hemper Ducky Bong!! This cute and friendly bong is a limited edition monthly water pipe. This awesome bong has all the great features you need for an enjoyable smoking session including an awesome showerhead percolator for more bubbles and smoother smoke. Retail Unit: One (1) Water Pipe Joint Size: 14mm Size: 6" x 3" Material: Borosilicate Glass Includes: 14mm Bowl Percolator: Showerhead Thickness: 3mm