Interesting and fun experiment: When squirrels or raccoons try to climb onto the perch to eat food, the spring devices begin to stretch, dodging the animals, closing, preventing them from climbing, making interesting moves to keep you entertained Good Size: The spring-loaded device is about 2.2 inches in diameter, about 25 inches in length, and can be installed on different styles of hooks without adjustment. Just install the spring on the top of the support rod, easy and convenient Provide a stable feeding place for birds: the metal spring device has good elasticity, can stretch long enough to maintain a sufficient distance between the bird feeder and the squirrel for the birds to eat the food, creating a coop for the birds to feed. What you can get: You will get 3 outdoor bird feeder accessories, enough for you to choose and use, which will add more fun to your garden and life, and you can also share it with your friends Reliable Material: Our bird feeder gadget is made of high