The rubber funnel adapter is tapered to accommodate various funnel diameters, creating a tight seal for a variety of applications. Crafted from premium rubber, this adapter is flexible yet strong, withstanding repeated use and maintaining its shape and integrity. The adapter forms a secure bond with the funnel, preventing leaks for precise results. Features -Color:Green -Material:Rubber -Size:8.40X8.40X3.50cm/3.30X3.30X1.38in -The funnel filter adapters can be used in various fields such as laboratory, chemistry, biology, etc. -Made of rubber material, the filter adapter has good wear resistance, withstanding harsh conditions. -The tapered filter adapter cone allows it to tightly connect the funnel and filter, avoiding water leakage and looseness. -The funnel flask stopper is simple to operate, suitable for various laboratories and workplaces. -Easy to clean and maintain for use, the filter flask stopper aims to improve your work efficiency. Package list: 2 x sets of filter adapters