Laboy Glass Penny Head Hollow Glass Stopper for 24/40 Outer Glass Joint Chemistry Lab Glassware 5Pcs
Special Features
- Penny head hollow glass stopper,with closed bottom and taper ground inner joint.
- Made of high quality heavy wall borosilicate glass tubing by hand-blowing
- Used to close glassware items like flasks,separatory funnels,cylinders
- With 24/40 inner joint
- 100% 90 DAY MONEY BACK GUARANTEE
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