The TAG 28/18mm Open End 12-Arm Tree Downstem is built for serious diffusion and upgraded filtration. Designed with twelve precision-cut arms (5x.8mm slits per arm), this downstem maximizes bubble stacking and smooth airflow through your water pipe. The 28mm to 18mm joint configuration makes it ideal for larger scientific-style setups that require high-performance percolation. Crafted from thick, clear glass, this open-end tree perc downstem delivers consistent function and durability.

• Joint Size: 28mm male to 18mm female

• Perc Type: 12-arm tree percolator

• Slits: 5x.8mm precision-cut slits per arm

• Style: Open end design

• Material: High-quality borosilicate glass

• Function: Increased diffusion and smoother hits

• Brand: Thick Ass Glass (TAG)