With standard taper outer joint at the top, and inner joints on the bottom and sidearm, all being the same size. Inner joints are at a 75º angle to one another.
If you need any other size or other Ground joints,please contact with us
Be Made From G3.3 Borosilicate Glass
Annealing Point ------560℃
Linear Coefficient of Expansion------ 33×10-7/℃
All of our glassware made by the glass blowers,not the poor glass,Please do not make the comparison with other's glass