33 COE borosillicate glass rod by Momka's Glass.
MB046 Green Envy is a very rich transparent green that develops faint wispy blue under strong oxidizing flame. Neutral flame to surface color tends to opacify while interior color surfaces develop a range of colors from tan to blue. Careful not to reduce, it will give an opaque red to exposed surfaces.
Diameter: 3/16" - 5/16" (5mm-8mm)
Length: Approximately 20" (51cm)
Sold by the rod.