This piece gets its name from the small slit in the dish that improves airflow and creates smoother, more enjoyable hits. When the creators first tried this domeless quartz piece, they declared it was as if they had found the Holy Grail, and the name stuck. Now you can enjoy the same quality thanks to the ingenuity of those talented craftsmen. The dish is wide enough that it can take exceptionally large pieces of concentrate material, so you won't have to be exceedingly accurate to use this rig.
In order to make sure this piece is compatible with just about any glass-on-glass rig, it is produced with both male and female joints in both 14mm and 18mm sizes. This range should provide an option for every standard rig on the market. If you've ever been curious about quartz banger nails, this is an excellent option to start with. It's also quite easy to clean and properly maintain.