The Hi-Si diffused downstem has strategically placed holes that make sure your hit is diffused in all directions and evenly broken up to ensure a smooth and balanced hit. These fantastically functioning downstems are engineered for Hi-Si pipes but also work great in any piece that they will fit.
- Diffused downstem
- Swiss-style percolation holes
- Made for use with Hi-Si pipes
- Fits into 19mm receiver
- Length: 3, 3.5, 4, 4.5, or 5in