Parts List: 1 x Squirrel-Proof Spring Device Detailed description: Product Name: Squirrel-Proof Spring Device Material: Metal Color: Silver Outer Diameter: 58-60mm Height: about 48-50mm Note： 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 2. Please allow slight dimension difference due to different manual measurements. Thank you for your understanding. [Squirrel-Proof Spring Device] The spring devices will start to stretch when squirrels or raccoons try to climb the pole, avoid animals close to your bird feeder. [Easy to Install] The spring barrier devices are easy to install on hooks of various styles without adjustment, just install the spring on the top of the support rod. [Good Elasticity] The squirrel-proof spring device with good elasticity can stretch 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 the birds. [Premium Metal] This squirrel device for bird feeders adopts quality metal, is not easy to break, and will not rust, smooth edges will protect your hands and animals and can be applied for a long time in your garden. [Perfect Gift] The squirrel-proof spring is the ideal choice for gifts, especially for those people who love birds, which will bring more fun to your yard and life, and you can also share with your friends.