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ROOR® Reducing 13-Hole Diffused Low-Profile Downstem Straight 18.8mm → 14.5mm with RED Decal 5 1/2"

SKU 418-DRDS-5-1/2-D29

ROOR® 13-Hole Diffused low profile style downstem, Limited RED ROOR decal.

The joint is 18.8mm where the 14mm Duran Schott Glass diameter downstem meets the tube. The tip of the ROOR® 13-Hole downstem has 13 individual holes blown into a beautiful patter to allow for maximum diffusion per hit. The Joint where the bowl is inserted measures 18.8mm and will fit with any 14.5mm male glass joint bowl.


  • (1) ROOR® 13-Hole Diffused Low-Profile Downstem Straight 18.8mm → 14.5mm Red ROOR Decal measuring 5½”



Every downstem is hand-measured and cut to each individual tube. If you owned a beaker or straight here are the best possible sizes to order for your tube.

ROOR® Classic Straight tube typical lengths that will fit 3 ¼” to 4” size changes in ¼” increments.

ROOR® Classic Beaker tube typical Lengths that will fit 4 ¾ ” to 6” size changes in ¼” increments.

Recommendations based on the average use of sizes for specific pieces are not a guarantee. The best way to know is to keep the original size of your downtem in your records if possible. For assistance, you can reach out directly to ROOR at for downstem sizing support.

The product image serves only as an example. The colors and arrangement of the color applications may differ due to the handcraftsmanship. We reserve the right to give our glass artists creative freedom, which is the only way to ensure the creation of the highest quality unique glass specimens.

! WARNING This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to