Standard Zob replacement downstem. It's the same high-quality downstem that comes with your Zob. 18mm & 14mm ONLY. If this downstem is for a Zob piece please indicate which pipe you will be using in the checkout notes.
Please describe the model of the piece you're buying your downstem for as well as specify the 18mm or 14mm size in the "Special Notes" section of your order so we can make sure your downstem will fit properly. Thanks.