Solid copper coil holds one nectar tube and attaches to any clean window with the attached suction cup. Bring those hummers right up close and personal! The nectar tube is plastic and in fact used to be a floral tube. The cap that comes with a floral tube, though, is ugly so we've put a feeding hole in the correct-size red rubber stopper and the hummers reach right in and drink it up. Each one is individually made so no two are exactly alike. The small tube helps insure that the nectar will be consumed before it begins to ferment. The hummer's tongue is twice as long as its bill, so with the tube in this nearly horizontal position, they can easily reach the nectar through the hole in the red cap. Like a trumpet flower only easier for them! These nectar tubes are easy to fill and easy to clean. Get enough for every window! Comes with nectar recipe and tips for attracting hummers to the feeder. Ships via First Class Mail.