22 Pack - 11 assorted sizes: 000#,2pcs; 00#,2pcs; 0#,2pcs; 1#,2pcs; 2#,2pcs;3#,2pcs; 4#,2pcs; 5#,2pcs; 6#,2pcs; 7#,2pcs; 8#,2pcs Rubber plug is also used as a bung for conical flask、glass carboy etc,exhibit excellent resilience and retain pliability for a long time,tapered shape design, easy to plug and pull Please read the dimension description image carefully before making a decision (might have 1-2 mm measurement error) Please note these rubber stoppers are not food grade HeyWin Team always adhere to the principle of customer first, and serve with heart. If you encounter problems with the product, please contact us immediately, we will give you a satisfactory answer within 24 hours HeyWin rubber stoppers offer a versatile solution for your laboratory and everyday sealing needs. This set of 22 rubber stopper white pieces includes 11 assorted sizes ranging from 8mm to 42mm, with each size available in two pieces. Crafted from high-quality white rubber, these white rubber stoppers assorted ensure excellent resilience and flexibility, making them ideal for prolonged use. Designed with a tapered shape, these white solid rubber stoppers tapered lab plugs provide a secure fit and easy insertion and removal. Whether you need a lab rubber stopper for flasks, beakers, or other glassware, or a lab beaker rubber stopper for specific experiments, this assortment covers a wide range of applications. The set also includes a lab rubber stopper 1 inch option, perfect for standard laboratory requirements. These white rubber stoppers plugs are not food-grade, so they are not recommended for direct food contact. However, they excel in non-food applications such as sealing balloon bottles or water tanks. Before use, please review the dimension description image carefully, as there may be a 1-2 mm measurement tolerance. At HeyWin, we prioritize customer satisfaction. If you encounter any issues with your lab rubber stopper assortment, our team is ready to assist you within 24 hours. Choose HeyWin for reliable, high-performance rubber stoppers that meet your lab and home needs.