5.25 Inch 15-Hole Diffuser Downstem | 18mm to 18mm

This 5.25-inch(134mm) 18/18MM glass downstem is especially suited for 12 inch–14 inch bongs and water pipes.

Crafted from premium borosilicate glass, it features 15 precision-cut holes for enhanced filtration, breaking up smoke into smaller bubbles for smoother, cooler hits every time. An ideal choice for those seeking improved airflow and a cleaner smoking experience!

Ideal for water bongs with an 18mm female joint size, it fits a 18mm male bowl on the interior side, making it a versatile addition to various setups.

If you’re unsure about the gender or size of your joint and herb bowl, or need help choosing the right downstem length, check out our article, “How to Choose the Right Downstem Size.” This step-by-step guide makes it easy to find the perfect fit and avoid any buying mistakes.