Description
The Glass Diffuser Coupling 18.8 mm Ground (12 cm) is designed to deliver smoother and cooler draws by improving diffusion inside water pipes. Made from durable clear glass, the integrated diffuser breaks smoke into finer bubbles, enhancing filtration and airflow. With its standard 18.8 mm ground joint and practical 12 cm length, this diffuser coupling is compatible with many glass bongs and is easy to install and clean—ideal as a replacement or performance upgrade.