Includes one BBW screw on Pyrex cup, fitted with a diffuser and an O-ring.
The BBWSG-19 cups have a new and improved design built on the original BBW structure. The new features include a threaded brass chassis and a vastly improved gas delivery. These models are also able to be used from 30-40 CFH of Argon flow. The BBWSG-19 No.16 & 17 brand of Pyrex cups are of DC polarity and have an amperage rating of 180.