Erva SB1D Cylindrical Squirrel Baffle, Black, 6.25-Inch by 16.75-Inch Length Cylindrical squirrel baffle Collars are solid steel and can not be chewed Baffles are powder coated over fully galvanized steel sheet Dome top cylindrical raccoon baffle for poles 1/2-inch to 1-5/8-inch diameter Measures in 91-inch height