Grav expansion adapters are designed to increase the diameter of your water pipe joint to make them compatible with larger accessories. This adapter changes a 14mm female joint into a larger 18mm female joint. This straight adapter from Grav is made with premium borosilicate glass and features a 14mm male joint on the bottom while accepting 18mm bowls, bangers, or other glass water pipe accessories on top. You can also use this adapter upside-down to convert an 18mm male joint into a 14mm male fitting.
Get Connected:Made for Bongs & Water Pipes
Grav® Joint Size Expansion Adapter
Male Joint - Fits Female Joints
Premium Borosilicate Glass
14mm Male Joint Bottom
18mm Female Joint on Top
Holds 18mm Male Accessories
Converts 18mm Male to 14mm Male
Converts 14mm Female to 18mm Female
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