With Iron Fixing: Our hoops are available in two styles for you to choose from, suitable for trees with a diameter of 10-40cm, from slender saplings to stout trunks, ensuring that each tree gets the support it needs without damaging the bark or restricting the growth of the tree in any way Tree Protection: Our stump kits not only help saplings not collapse or skew in windy or rainstormy weather, but also allow trees to expand and grow upright in the intended direction, protecting trees of all sizes, from seedlings to large trees 40mm Steel Tube: Our stump support is made of high-quality 4cm diameter galvanized steel pipe carbon steel, which is rust-resistant and anti-aging and will not deform, enough to firmly hold the tree, watch your tree thrive under the care of our support, (the regular size is listed in the list, if there is no size that suits you, we can customize it for your tree) Weatherproof Tree Branch Support Stakes: Designed to withstand strong winds and harsh weather conditions, our stump kits protect trees of all sizes, from seedlings to large trees, and can also be used to straighten trees and secure a variety of outdoor items to keep the trees in your orchard/garden/estate standing Packaging includes: Our Tree Stake Kit includes: Screws x4, Hoops x4, Tubes x4, and additionally reinforced feet for better fixation and support in the dirt, very easy to install and can set them up in minutes