Yankee Dipper Squirrel Proof Bird Feeder --Sturdy stainless steel wire - will not rust. Metal powder coated cap fits snugly on tube - squirrels cannot pry off. 43/4-in. UV stabilized polycarbonate tube - won't yellow with age, dependably durable. 21-in. long tube - squirrels can't reach seed from the top of feeder. Interior baffle design - seed flows freely to seed ports. 4 seed port - provide optimum feeding positioning. Large capacity - holds 5 lbs. of seed. Weight sensitive collapsing perch rods are calibrated for small birds to eat, red squirrels, grackles and starlings meet defeat. Straight perch is a tried and true design. Powder coated in burgundy looks beautiful in a natural setting.