Say goodbye to a ruined smoking session with our premium-quality Aqua Lab Technologies Replacement Downstems for your bong. Whether you need to replace a broken downstem or want to upgrade your smoking experience, our downstems are designed to fit most standard glass bongs, bubblers, and water pipes requiring a 14/18mm fitting. Crafted from high-quality boro glass and featuring six diffusion slits for exceptional airflow and water diffusion, these 14/18mm diffused downstems are handblown in California by Aqua Lab, using only the finest American borosilicate glass for unparalleled durability and long-lasting use. Choose from different downstem sizes and lengths to fit your unique needs, and enjoy the convenience of a 14mm slide joint fitting and an 18mm bong joint fitting. Elevate your smoking experience with Aqua Lab Technologies Replacement Glass Downstems for Bongs, proudly made in California, USA.