Bearing Steel Ball Flagpole Rings: The outer part of the flagpole ring is made of premium aluminum alloy, and the inner part is made of bearing steel with built in steel balls. The structure is well crafted, sturdy and durable enough to withstand wind, rain, and strong sunlight better than ordinary flagpole rings, without cracking or discoloration. Tangle Free Design: The unique smooth rotating bearing design allows it to rotate freely 360 degrees, ensuring excellent anti winding performance. Even on windy days, your flag spins smoothly without tangling or wrapping around the pole. It can proudly fly your national flag. Perfect connectors for your flag pole and flags! Adjustable Stainless Screws and Aluminum Hooks: The flag pole rings uses screw to adjust the diameter.