4 pieces in one set: the universal strainer filter cap is designed for In-tex/ForBestway above ground pool filter pump, perfect replacement part. Convenient replacements: the strainer pipe hole plug can be used for In-tex/Bestway pools that don't have plunger valves, helping you replace filters in pumps.Compatible Model: Above Ground Pool Pool Plugs can be used to replace the 530/1000 GPH pump models or smaller aftermarket parts, perfect pool accessories.Functions: Pool plugs are used for pools that take 1.25" diameter hoses that do not have valves piston to stop the water when changing the filter. It is used to replace the filter pump and retain water while cleaning the pump filter. Size: as shown Blue color Quantity delivered: 8 pieces Note: The data is all measured manually, please allow 1-3cm error, due to the difference in light and display, there will be a certain color difference, the actual object received shall prevail.