Incredibowl: XL 10" polycarbonate Expansion Chamber for the i420 The Gravitron is the first

The Gravitron is the first all-glass gravity smoking system and GRAV's namesake

How many concealers have you seen that are digitally adjustable and have digital battery readout on an LCD screen

The unit also has a pre-heat function of to get carts going

Glass Colors:

Incredibowl: XL 10" polycarbonate Expansion Chamber for the i420 The Gravitron is the firstUpgrade your standard 6 i420 chamber to a 10 XL chamber for even more dramatic cooling and smoothness, or the massive Incredibowl: XXL 20" Polycarbonate Expansion Chamber for the i420 chamber. Made of the same shatterproof polycarbonate as the standard i420 chamber, and covered under Incredibowl standard lifetime warranty. Incredibowl: i420 Smoking System sold separately.