(1)material:boro 3.3 (2)joints:14# 19# 24# (3)volum:from 5ml to 250ml (1)item:Flask ,modified schlenk tube(2)joints:14# 19#24#(3)types:50/14 100/14 100/24 250/24 500/24(4)material:heat resistant 3.3 borosilicate glass(5)We have a great variety of flasks, such as one neck, two neck(bevel), three neck(include bevel), and so on. Flask ,modified schlenk tube