Two-piece spare cold traps made of borosilicate glass 3.3.
Versions of the cold trap connections:

Cold trap(s) two-piece
Dewar flask(s) cold trap(s)
Dewar flask(s) replacement cold trap(s)
Cold trap(s) two-piece
Dewar flask(s) cold trap(s)
Dewar flask(s) replacement cold trap(s)
Cold trap(s) two-piece
Dewar flask(s) cold trap(s)
Dewar flask(s) replacement cold trap(s)