This 21in.L bird feeder from Droll Yankees is squirrel-proofed with 4 weight-sensitive collapsing perch rods that are calibrated to support small birds and defeat squirrels, grackles and starlings. U.S.A. The 4 3/4in. diameter polycarbonate tube is UV stabilized and wont yellow with age 4 seed ports and internal baffles keep seeds flowing evenly Holds 5 lbs. of seed Powder-coated cap fits snugly on tube Rustproof stainless steel wire