Linear Pre-Cooler with removable diffuser adapter - 18.8 - Dutch - Grasscity.com is the slide connected to the downstem??
3 piece, its a bushing joint on the downstem, meaning that the downstem has a 18.8mm male joint and a 14mm female joint for the bowl.
Lol, what he's saying is theres the a/c (part with water) that has a 18mm female joint, a diffuser (long glass peice) that has a 18mm male on the outside and a 14mm female (for the bowl). Kinda hard to explain.
see but its funny cuz it says something about a diffuser and that downstem is DEF just a straight downstem but w/e il just get one from my LHS