Features: 1.Easy to use: If a squirrel or raccoon tries to climb the pole to eat the feed, the spring-loaded device will start to stretch, avoiding the animal39;s approach and stopping them from stealing bird food 2.Reliable material: Our bird feeder device is made of high quality metal, not easy to wear or break, smooth edges, you can be assured of long-term application. 3.Suitable size: The spring device has a diameter of about 2.2 inches and a length of about 25 inches, which can be mounted on various styles of hooks without adjustment, simply by mounting the spring on the top of the support bar, simple and convenient. 4.Stable feeding place for birds: The metal spring device is flexible and can be stretched to a sufficient length to keep enough distance between the bird feeder and the squirrel so that the birds can eat the food, thus providing a stable feeding place for birds 5.What you can get: You will get 1 outdoor bird feeder accessories for you to use, which will bring more fun to your yard and life, you can also share with your friends Notice: Actual color may be slightly different from the image due to different monitor and light effect Please allow 1-3cm deviation due to manual measurement Material: metal iron Size: 2.2 inches wide, up to 25 inches long Package size:single 6*5*6cm Weight: about 100g Package List: 1*Squirrel Proof Spring