BLAZING FAST & FREE U.S. Shipping!
This adapter fits your 18mm female jointed water pipes. It raises the joint to prevent heat stress and fractures from heating too close to the joint, as well as giving you more room to use accessories such as dropdowns.
Smoke Science - Durabowl Glass Pipe Protection
Smoke Science - DuraBowl XL Water Pipe Protection
Dank Geek - Lightning Grinder 4 Piece
Grav - Grinder