Looking for a simple, easy way to upgrade your water pipe or bong? Look no further than our Glass-on-Glass Diffused Down-Stem! This down-stem is made of high quality glass and features a glass-on-glass connection for a secure and airtight fit. The 6-slit diffusion ensures that you get a smooth pull every time, and the 18mm male outside to 14mm female inside ensures a perfect fit for most standard pipes and bongs. So add a touch of luxury to your smoking experience with our Glass-on-Glass Diffused Down-Stem!