For 4x4 Wooden Poles: The squirrel stopper features a square design that securely mounts to 3.5in to 4.5in diameter 4x4 post or round wood poles. Its precise dimensions ensure a tight and stable installation, effectively deterring squirrels from approaching bird feeders or other items hanging from the pole. Sturdy Metal Construction: This squirrel proof baffle is made of sturdy metal material for superior durability and strength. The metal composition will not easy to tear or break, ensuring long-lasting performance. Ensure that it will reliably keep squirrels, raccoons, etc. from stealing food. All-Weather Protection: The slinky for bird feeder pole has a weather- proof power finish, designed to withstand all weather conditions such as rain, wind, snow, etc., with strong outdoor resilience to continue to fend off squirrels through the changing seasons. Squirrel Proofing Tips: Squirrels can jump at least 4 feet vertically, we recommend that bird feeders be placed at least 8 feet away from trees and wood poles. Clever squirrels may use the squirrel deterrents for bird feeders as a springboard to jump onto the bird feeder, so it's best to install it in an open space, otherwise any squirrel baffle will lose its protective function. Effortless Installation Process: Without removing the feeder pole, wrap the 4x4 squirrel baffle around a standard 4x4 inch post and can be secured to the wood pole with the included tapping screws. Then use the screw kits to secure the 4 baffles to form a square. Note:Only the squirrel shield and installation accessories are included, nothing else. Customers need to assemble by themselves. Colour:Black Material:Metal Package Contents: 1 * Metal Squirrel Baffle for Post Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.