Glass Downstems

Quantum Sci Glass Downstem - Black Quantum Sci glass bongs are some of the best water pipes on the market. This is because we make sure our glass not only look good but hold up to the standards that our customers expect when buying high...

Quantum Sci Glass Downstem - Black 18mm female These glass downstems were made to be long lasting. Featuring a thick and heat-resistant borosilicate glass body, these bong downstems are some of the utmost quality that you can find. Fits into an 18mm...

Quantum Sci Glass Downstem - Clear These glass downstems are of premium quality and are available in four different lengths. Measured from tip of the diffuser to the very beginning of the frosted joint insert. The diffuser holes of these downstems...

Quantum Sci Glass Downstem - Purple A very clean, elegant-looking, clear purple color with a frosted joint. This quality glass downstem is available in four various lengths: 4½ inches, 5 inches, 5½ inches, and 6 inches. The diffuser...

Quantum Sci Glass Downstem - White Matrix Designed with a matrix diffuser for excellent filtration and excellent airflow. This bong downstem is not your typical, cheap glass downstem that have plagued the internet. This glass downstem is different...

Quantum Sci Glass Downstem - White This is not your ordinary, typical, cheap glass downstem that you find on other websites for $5. This is a premium quality downstem made of a very durable borosilicate glass. A clean and sleek looking white glass...