17.5 in. Green Thistle Spiral Feeder. Consumers & birds LOVE patented BirdQuest Spiral Feeders! More ports means more birds. Birds love to Run The Spiral instead of flying to another perch. Spiral allows cardinals, grosbeaks and other desirable large songbirds to feed. With normal perch tube feeders, these birds have difficulty feeding without a seed tray. Lifetime warranty on workmanship and normal wear and tear. Aluminum and stainless steel parts. Squirrel-proof- patented locking lid- just twist and lock those pesky varmints out. Easy to clean- twist and clean (patent pending) easy-clean bottom comes completely off for easy cleaning. No screws to mess with. Easy to hang- looped wire hanging cable included (150 lb test) and attached. Holds cap so you don't have to wonder where you put it. Feeders come completely assembled (in beautiful open view box.) Take out of the box, hang in your yard, and watch how fast the birds are attracted to the patented Spiral Perch.