Wraparound break-apart squirrel baffle for poles 1/2″ to 1″ diameter. Also 7/16″ to 5/8″ Square poles. Baffle Diameter is 17″. To keep squirrels from getting onto your bird feeder, place your pole-mounted feeders 8-10′ away from railings, roofs or trees. Squirrel baffles should be a minimum of 4′ from the ground to protect the bird feeder. To close your baffle, slide the left tab into the right slot until they snap together. Made in the USA.