Mixed Set Of Three Laboratory Glass Stopcocks – No. 2

Mixed set of three laboratory glass stopcocks: one adapter with a tapered ground joint and two long-stem stopcocks with bent ends. Ground-glass plugs and glass handles of differing shapes. One plug has paper remnants and a retaining rubber band. Signs of use and storage. Detail props for laboratory and chemical industry sets. The two numbered sets contain seven similar items in total, which can be combined into a grouped arrangement. Operation and leak-tightness have not been tested.