The bowl is 14.5mm. The same as the pictures, comes with 18mm downstem, bowl and the plastic clip.The item "THICK 7MM Glass Beaker Bong with Percolator 16 inches Tall Pink or Green" is in sale since Thursday, February 21, 2019. This item is in the category "Collectibles\Tobacciana\Hookahs". The seller is "special_souvenirs" and is located in China. This item can be shipped to Canada, United States.