IQ Accessory kit "Custom" Grav Labs got together with

Grav Labs got together with master glassblower and designer Micah Evans to dream up and construct this great steamroller

Snoop Dogg POUNDS | Mothership Waterpipe

There are then two more restrictions just before the mouthpiece to add a final layer of cooling

pinched mouthpiece

IQ Accessory kit "Custom" Grav Labs got together withThe Davinci accessory kit includes a cleaning brush and alcohol wipes to clean up your Davinci IQ no matter how dirty or covered in resin it it. It also includes a spare mouthpiece gasket and spare o rings to replace the standard ones which can get worn out and start to slightly affect flavor.