This is the 18.8mm Spherical GG wand made for the Silver Surfer Spherical Ground Glass heater cover.
The spherical ground glass connection is made to be an even controlled heat distribution by giving the user a full range of motion with the wand while still having the air-tight seal of the ground glass connection. While giving you a larger bowl compared to the traditional ground glass set-up.
Color is for reference only. Different colors will be shipped and cannot be specified.