GRAV 14mm Male/18mm Female Straight Adapter

The Straight Adapter from Grav (formerly Grav Labs) is made with high quality glass and is designed to convert your 14mm female glass on glass joint to a 18mm female connection or any 18mm male glass on glass joint to a 14mm male connection. Borosilicate Glass Grav Decal Converts from 14mm Female to 18mm Female Converts from 18mm Male to 14mm Male Joint: 14mm Male/18mm Female