GRAV LABS - Glass on Glass Downstem w/ 9-hole Diffusion - 18mm to 14mm (Pick Your Length)
- Will fit glass bongs with an 18mm Female Joint.
- This downstem works with 14mm Bong Bowls.
- Length = Clear section, does not include frosted section (joint)
- Multi-Hole Percolator
- Made by GRAV Glass
How do I figure out what length I need?
You can measure your current downstem. Measure from the bottom of the frosted joint to the end of the downstem.
If your downstem broke and you are unable to measure it, don’t worry, we have an easy solution.
1. Take a strand of uncooked spaghetti pasta. Stick it in your bong where the downstem would normally go. Position it parallel with the joint (don’t angle it or your measurement may be off) and make sure it is as far in as it can go.
2. Break off the extra that sticks out past the joint. Take the strand of spaghetti out of your bong and measure it.
3. Take that measurement and subtract 22mm (that accounts for the length of the joint) .
NOTE: Some bongs, like the ones made by MIO Glass, are made with handworked joints. In that case, you will need to measure the frosted section on the bong where the downstem goes in and use that number to subtract from your spaghetti measurement.
4. That’s it. Now you have the exact measurement of the downstem you will need. If the exact length is not available go with the closest available size down.