Rubber Stopper Bungs Laboratory Solid Hole Stopper Tapered Flask 15 Sizes Hot

Tapered Silicone Bung Stopper Laboratory Solid Test Tube Hollow Plug Intake Hose. Can be used for test tube, flask stopper or other bottles. Material: Rubber. Size: 15 sizes(Shown as picture). 000#:Top Dia: 13mm,Bottom Dia:8mm ,Height:17mm.

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