Material:made of high quality metal that won't wear out or break easily, coated with an anti-rust coating to give you a smooth finish, it can be use a long time. EASY TO INSTALL: The baffle metal spring device is easy to install on various styles of hooks, just put the first loop on and then wrap it around the pole through the loops Super elastic: The metal spring device has super elasticity, and the maximum stretch up to 25inch, provide a comfortable bird feeding place. An Effective Squirrel Barrier：This squirrel barrier is mainly designed to protect hanging bird feeders for outdoor poles, a useful tool to avoid animals close and stop them from climbing to the top You Will Get：The Squirrel Baffle kit including 2 PCS silver metal spring coil, enough quantity for your need