Are you looking for a functional downstem for your favorite bong to prevent it breaking from high heat？
This 18mm to 14mm downstem is made from the extraordinary borosilicate glass and features with a slitted 4-arm tree percolator on the bottom. When you inhale, the tree percolator can create bubbles, the smoke will travel through the downstem and then spread the multiple holes on the tree perc.
The tree perc downstem can enhance filtration to any bong with an 18mm joint and will fit any 14mm male bong bowl or attachment with a 14mm male joint.
Features Of This Tree Perc Downstem