Features weight-sensitive collapsing curved perches that support birds and not squirrels. Length and girth of feeder are specific to repelling squirrels while a heavy metal cap prevents squirrels from reaching in. An internal baffle design delivers the seed to the ports. The 4-3/4″ x 17″ feeder tube is made of UV-stabilized, non-yellowing polycarbonate. The metal cap and feeder base are powder coated. Hangs from a looped stainless steel wire. Four seed ports. 5 Lb capacity. 28.5″ overall length.