GRAV Hammer Bubbler - Assorted Colors Design|Portable/Compact The diffused fixed stem design

The diffused fixed stem design ensures optimal diffusion

The right chamber features a 14mm female joint

Don't settle for anything less than the best when it comes to your herb-grinding needs

In addition to the impressive functionality

this rig stands at an impressive 8" inches in height

GRAV Hammer Bubbler - Assorted Colors Design|Portable/Compact The diffused fixed stem designLooking for a bubbler thats built to last? Look no further than the GRAV Hammer bubbler. This bad boy is ready to take a beating and still deliver jumbo hits. The Hammer has been redesigned with a wide can that rests easy when not in use. A fission downstem diffuses smoke through 0. 5 of water for cooling, while 11 comely colors make it look good doing it. Whether youre a pro or just starting out, the Hammer is the tool for the job.