Yankee Flipper. Squirrel-proof bird feeding. Sturdy stainless steel wire- will not rust. Metal powder-coated cap fits snugly on tube- squirrels cannot pry off. 4 3/4 UV stabilized polycarbonate tube- won t yellow with age. Dependably durable 21 long tube. Dimensions (H x W x L) : 29.25 x 8.75 x 8.75