Nitrogen tube, 50 ml, graduated, socket size 14,5/23,

side PTFE valve 0 - 8 mm, fine thread
Nitrogen tube, 50 ml, socket size 14,5/23, side PTFE high-vacuum valve with fine thread, valve passage 0 - 3 mm, graduated, hose connection Ø 8 mm, borosilicate glass 3.3