A bargin this is. Im parting with my 18mm dewarr showerhead a/c and two very diffrent j hooks. both are 18ish. I will also include a keck clip to keep it all together as a bubbler and the original blackleaf combustion bowl. the strait jhook attaches perfect. the disc jhook from thickassglass is loose so I suggest some teflon plumbers tape to secure it from accidentally spinning. I am asking $60 shipped paypal included. I also have an unused domeless nail and a used 18mm male male adapter (not pictured) if buyer wants to go concentrate that can be added for an additional $10 for a total of $70 paypal only. I can of course take more photos for interested parties. sold!!