The conical shape of these stoppers have a diameter of 5/8" at the bottom and 7/8" at the top. Tube diameter is 5/16" x 3-1/2" long. These stoppers do not contain a ball bearing. Sold as a set of 4.

Hummingbird Feeder Stoppers - Set of Four

The conical shape of these stoppers have a diameter of 5/8" at the bottom and 7/8" at the top. Tube diameter is 5/16" x 3-1/2" long. These stoppers do not contain a ball bearing. Sold as a set of 4. Be sure to choose USPS as a shipping option during checkout for the most economical shipping method. TIP: Always fill your feeder completely full with cool nectar. Insert the stopper and invert quickly to avoid any air entering the feeder. Tube feeders operate on a vacuum principle. Only if the feeder is initially filled completely full will the vacuum form!

Country	USA
Brand	Garden Artisans
Feature	Hummingbird Feeder Stoppers - Set of Four
Label	Garden Artisans
Manufacturer	Garden Artisans
MPN	STOP4-1A
PartNumber	STOP4-1A
Publisher	Garden Artisans
Studio	Garden Artisans
ReleaseDate	0000-00-00

Hummingbird Feeder Stoppers - Set of Four