Buttonhook with Taper Joint (only on glass)
...
...
Pyrex 24/40 Female Taper Joint
...
Pyrex 24/40 Male Taper Joint
...
Quartz 14/35 Female Taper Joint
...
Quartz 14/35 Male Taper Joint
...
Quartz 24/40 Female Taper Joint
...
Quartz 24/40 Male Taper Joint
...