GLASS Slot Diffuser Coupling, 18.8 Mm, 13 cm

The Glass Slot Diffuser Coupling 18.8 mm (13 cm) is designed to provide smoother, cooler draws through improved diffusion. Made from durable clear glass, the slotted diffuser end breaks smoke into finer bubbles, enhancing water filtration and airflow. With its standard 18.8 mm joint and extended 13 cm length, this coupling is compatible with many glass bongs and water pipes and is easy to install and clean—ideal as a performance upgrade or replacement part.