This piece may look like a flower vase but it is a fully functional bong! The Han by China Glass features a diffused downstem to diffuse and cool the smoke! The design was inspired by the porcelain vases during China's dynastic period and handblown by master craftsmen from the Hebei province. The joint is 14mm female and comes with a matching 14mm male bowl. This amazing piece makes an excellent daily driver and it can also be used as a vase to hold flowers!