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Product Review
- High-quality rubber stoppers are soft and non-greasy with a durometer of 45
- Includes solid, 1-hole, and 2-hole stoppers in sizes 1 through 6 for versatile lab use
- One-pound assortment contains multiple quantities of each stopper size and type
- Ideal for sealing flasks, test tubes, and lab glassware in chemistry and biology labs
- Durable and reusable for classroom demonstrations, science experiments, and general lab applications
