This 18mm to 14mm glass adapter is your go-to fix when your favorite attachment just doesn’t fit your bong. Designed to reduce your joint size from 18mm down to 14mm, it opens up your setup to a wider range of bowls and accessories. Made from sturdy borosilicate glass, this adapter is heat-resistant, airtight, and built for daily use. It’s the little piece that makes a big difference.

• Joint Type: 18mm Male to 14mm Male

• Material: Thick borosilicate glass

• Function: Reduces joint size for added compatibility

• Usage: Great for switching between different bowl sizes

• Fit: Works with most standard glass water pipes and accessories