Set Of Three Laboratory Glass Stopcocks With Bungs

Set of three laboratory glass stopcocks of differing designs, fitted with bungs. Straight and bent tube connections with ground-glass plugs; the shorter piece has an additional small screw fitting. Two black rubber bungs and one larger brownish bung. The bungs show pronounced ageing and surface wear. Detail props for laboratory and chemical industry sets. Operation and leak-tightness have not been tested.