This squirrel baffle is made of powder-coated steel. Includes coupler for mounting to any pole 1/2" to 1 3/8" in diameter. Torpedo baffle is 6-inch in diameter. Pole mount squirrel baffle below feeder about 4 to 5 ft above the ground with included coupler. Allows birds to feed while preventing access to squirrels and other critters. The baffle is a slide on. One needs to remove the feeder and slip over the top on a one- piece pole.