Material: steel+nylon floor nails Size: 40cm Packaging range: 4 * screws+4 * webbing 1. Metal nylon webbing: 4 thick 1.6mm with metal buckle, adjustable to any length, carrying 450IB, easy to adapt to camping, trampoline, pets, etc. Spiral anchors: Piles can be easily screwed into the soil to secure the fixing system. 16 are buried deep in the soil, with a support capacity of up to 450 pounds. 3. Perfect size: The trampoline anchor kit includes 4 spiral anchors and 4 heavy-duty fastening devices, suitable for all round or rectangular trampolines. 4. Durable Protection: This anchor can protect you from the troubles of trampoline sports and adapt to various situations that require anti displacement. The sturdy strap can be easily connected to the ground and can be quickly assembled and disassembled. Comprehensive use - used to fix items such as trampolines, slides, swings, or boats, windproof, suitable for all garden trampolines and leisure trampolines