Product description Heavy-Duty Earth Anchors for Trampolines, Dogs Tie-out, Tents & Swing Sets Are these ground anchors strong enough for windy outdoor setups? Built from 9 mm solid steel with a screw-in spiral design, these ground anchors provide strong grip in suitable soil to help keep tents, canopies, outdoor decorations and other equipment more stable when the wind picks up. How do I install these spiral ground anchors? Install manually using the included manual rod through the top ring, or use the 14 mm hex head with a compatible adapter and power drill for faster setup. Drill and adapter are not included. What is the difference between the 12-inch and 16-inch sizes? The 12-inch size offers a practical balance of holding strength and easy installation for everyday outdoor setups. The 16-inch size provides deeper ground engagement for applications that need additional anchoring support. What can these ground anchors be used for? These spiral ground anchors work with suitable ropes or straps for tents, canopies, dog tie-outs, trampolines, swing sets, gazebos, garden decorations and seasonal holiday inflatables. What type of soil works best for these screw-in ground anchors? These anchors work best in workable soils such as loam, sandy soil, silty soil, and clay soil that is not overly compacted. Avoid extremely hard, rocky, or muddy ground, as difficult soil conditions may affect installation and holding stability. About this item HEAVY-DUTY 9 MM SOLID STEEL CONSTRUCTION: Built from 9 mm solid steel, these ground anchors provide a sturdy support for repeated outdoor tie-down use. The orange powder-coated finish helps protect the steel against rust and outdoor wear for dependable use through changing weather conditions STRONG SPIRAL GRIP FOR WINDY CONDITIONS: The scr