Effective ground anchor: Work with any 3/8 inch or larger drill, recommended 18 V or Larger. Spiral shed anchors ensure that it rotates firmly and quickly directly into the ground. even with hard clay floor. [Upgrade Version] Compared to most manual shed anchors, we have Product structure updated. Simply use an electric drill (drill was not included), it works better and saves time. Multifunctional: Suitable for tents, trampoline, swing, play equipment, slides, Canopies, temporary shelters, family activity rooms, pet rooms, fences. and fences.