Made of powdered-coated steel, this 18" baffle includes a coupler for mounting to any pole, 1/2 inch to 1 3/8 inches in diameter.  Just screw the coupler in place and then encircle the baffled over the coupler and attach the edge to make a cone shape.  This baffles prevents critters from climbing up your pole into your feeder.  The perfect baffle when you cannot slide a baffle over a pole that is curved at the top or pronged at the bottom.