Amber Glass Stoppers, Hex-Head, Hollow

Laboratory Application: Designed for sealing flasks and light-sensitive experiments; amber glass blocks UV/visible light to protect from degradation Hollow Hexagonal Design with Closed Bottom: Features a central hollow core and six-sided shape for secure sealing; closed bottom prevents leaks Premium Material: Made of lab-grade borosilicate glass, withstands high temperatures and resists corrosion Versatile Compatibility: 1-pack; fit standard lab glassware joints, ensuring leak-proof seals for precise experimental conditions Warranty: 1-year coverage period for your peace of mind, if received damaged, please let us know and we will solve it promptly ASIN: B0F6T93GV6, B0F6T3WB7K, B0F6SHWKLB