If you are looking for a portable quick connector, then your search is over. Made from good material for practical and durable use. Light in size, flexible in use, easy to install and disassemble. No need for any other tools, just insert the tube into the bottom to connect or disconnect quickly and easily. Features -Color:As Shown -Material:Plastic -Size:2.20X2.20X2.10cm/0.86X0.86X0.83in -Specification: 1/4 check valve, one-way - Made of plastic material, strong and durable, pressure resistant, not easy to break, can be used for a long time. - Light in size, flexible in use, this reusable check valve is easy to install and disassemble. -The practical check valve is suitable for water purifiers, reverse osmosis water systems, filters, etc. - Fine workmanship and creative appearance ensure its popularity and practicality. - Connect quickly and easily without any other tools. Suitable for water purifiers, filters, etc. Package list: 3 x Check Valves