18 Pack, 9" Coil, EasyFlex Tree Trunk Protector, Guard Young Trees Against The Damage Of String Trimmers, Gardening Tools & Equipment, Rodents & Other Small Pests, Developed To Blend With Tree Bark, Round Tube Form Supports Itself & Will Not Lose Its Shape In Hot Sun, Functional Slotted Design Allows Airflow Around Tree Trunks, Protecting Against Bark Rot. For Trees Larger Than 4" Diameter, Connect 2 Or More Coils Using The Practical Expansion Tabs, Manufactured From 100% Recycled Materials.