Click or scroll to zoom Tap or pinch to zoom GRAV® 14mm Female to 14mm Female Joint Adapter by GRAV $7.99 White - $7.99 Color White 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart GRAV® joint adapters change the gender of a joint, making water pipes compatible with different accessories. This adapter changes a 14mm male joint into a 14mm female joint.