Rubber Stopper Size 10: 8.1/12.1 x 20mm (5 Pack)

Title: Rubber Stopper No. 10, 8.1/12.1 mm Diameter, 20 mm Height (5 Pack)

Description:

High-quality rubber stoppers, ideal for sealing laboratory glassware. These size #10 stoppers feature a smaller diameter of 8.1 mm and a larger diameter of 12.1 mm, with a height of 20 mm. Sold in packs of 5, perfect for securing flasks, test tubes, and other laboratory equipment. Ensure a secure and leak-proof seal for your experiments.