Synthware^™ straight bore glass stopcock

Synthware^™ straight bore glass stopcock, bore size 2 mm, O.D. 8 mm stem, plug size 12/30

Synthware^™ straight bore glass stopcock, bore size 6 mm, O.D. 12 mm stem, plug size 20/44

Synthware^™ straight bore glass stopcock, bore size 4 mm, O.D. 10 mm stem, plug size 17/40