This adapter by Grav Labs fits your 14mm or 18mm male jointed dab rigs. It can be used in two different ways. You can take your 18mm male jointed rig and transform it into a 14mm female joint, or you can take your 14mm male jointed concentrate rig and turn it into an 18mm female joint. This glass adapter allows you to smoke dry herbs and tobacco out of your favorite vapor rig! This glass adapter is distributed from Austin, Texas.
Joint Size:14/ 18mm female