FMS Ravenox Purple Martin Pole Guards | Purple Martin Predator Guard | Round Predator Pole Guards for Outdoors Gourd Birdhouse Stand (Round Pole) LIGHTWEIGHT AND DURABLE PREDATOR GUARD: The durable materials make for long-lasting use over multiple seasons. Climbing predators such as raccoons and snakes can access gourds and threaten nesting birds. Pole guards can be attached to both round and square poles to prevent predators from climbing up poles. BIRD HOUSES FOR OUTSIDE INSTALLATION: Simple and easy installation without removing the birdhouse to mount. The predator guard securely attaches around an existing pole for minimal disturbance and maximum protection. No need for heavy duty dismantling or re-assemble work. ROUND PURPLE MARTIN PREDATOR GUARD: Ravenox Gourds are constructed to protect birds from aerial threats with deep cavities. Narrow access holes dont protect against terrestrial threats. Keep your bird houses safe from predators with a premium Round Pole Ravenox Guards. Prevent climbing by a host of animals, pets, reptiles and snakes. BIRDHOUSES FOR OUTDOORS BY RAVENOX: We have premium purple martin bird feeder poles to fit square and round applications. Designed for use on any 2-inch square pole that uses a rope and pulley. This aluminum pole guard is 24-inches long with a 7 -inch diameter. BIRD FEEDER POLES RISK-FREE: We are a USA, CERTIFIED, Service-Disabled, Veteran-Owned, Woman-Led business that offers a one-year, money-back guarantee on all birds choice Purple Martin house purchases.