(1)material:boro 3.3 (2)joints:14# 19# (3)shape:pear (4)volum:from 10 to 100ml (1)item:Flask,twoneck ,pear shape (2)material:heat resistant 3.3 borosilicate glass(3)joints:14#19#(4)types:l0/14,14 25/14,14 50/14,14 100/14,14 100/19,19 25/19,14 50/19,14 100/19,14(5)We have a great variety of flasks, such as one neck, two neck(bevel), three neck(include bevel), and so on. 2 neck flask pear shape