This replacement metering ring/seed diverter is used to hold back the seed from flowing too quickly to the seed ports of the classic bird feeders. It is included in our pole mounted classic bird feeder (#NP431) and our hanging classic bird feeders (#NP435 and #NP436) Description ...This replacement metering ring/seed diverter is used to hold back the seed from flowing too quickly to the seed ports of the classic bird feeders. It is included in our pole mounted classic bird feeder (#NP431) and our hanging classic bird feeders (#NP435 and #NP436) Description Metering ring fits inside the clear tube of all hanging and pole mounted classic feeders Used to hold back seed from flowing too quickly to the seed ports Made from clear acrylic Place inside tube with legs down Details UPC 789453700643 WEIGHT (LBS) .25 MATERIAL Acrylic BRAND Birds Choice