The adapter cones, is essential for laboratory filtration processes. This set ensures a secure and leak-proof connection between the funnel and flask, making it ideal for precise filtering tasks. The silicone material provides excellent chemical resistance and durability, ensuring long-term use in various laboratory environments. Features -Color:White -Material:Silicone -Size:8.30X8.30X3.20cm/3.26X3.26X1.26in -Size:7.10X7.10X3.20cm/2.79X2.79X1.26in -Size:6.00X6.00X3.20cm/2.36X2.36X1.26in -Size:5.00X5.00X3.20cm/1.97X1.97X1.26in -Size:4.20X4.20X2.70cm/1.65X1.65X1.06in -Size:3.40X3.40X2.30cm/1.34X1.34X0.90in -Size:2.80X2.80X1.60cm/1.10X1.10X0.63in -Size:2.20X2.20X1.40cm/0.86X0.86X0.55in -Size:1.70X1.70X1.20cm/0.67X0.67X0.47in -High efficiency filtration: the silicone funnel stopper ensure effective filtration, removing impurities and odors from water -Versatile design: this product can be used as vacuum flask adapter and funnel flask stopper, making it suitable for various application -Precision craftsmanship: is meticulously crafted for optimal performance -Easy installation: simply place the filter adapter ring on the flask funnel attachment to start filtering, making the process straightforward and user-friendly -Wide applicability: the funnel filtration adapters are designed to fit a broad range of laboratory equipment and filtration setups Package list: 10 x filter adapters