Aspects Nectar Guard Tips - 12 pk

These tips easily slide onto the feeding ports on the underside of the feeder cover. Featuring a  flexible membrane in the center of each tip that easily opens when hummingbirds insert their beaks to feed and close up tightly when the beak is removed. They create a barrier that flying insects can't penetrate. Made for use with HumZinger Ultra and Fancy hummingbird feeders.