If your kids love to bounce, bounce, bounce on the trampoline, use the Upper Bounce Trampoline Spiral Anchor Kit to keep your trampoline securely in place, which goes a long way to increase the safety of this fun, backyard activity. Incredibly easy to use, simply screw the steel anchor into the ground, connect the strap to the anchor, and then connect the strap to the trampoline's frame. The universal design of this trampoline ground anchor kit from Upper Bounce fits with all kinds of trampolines. Includes 4 anchors and 2 connector straps. Manufacturer model #: UBHWD-AKB-4. Keeps your trampoline securely in place. Increases the safety of this fun, backyard activity. Incredibly easy to use. Fits all kinds of trampolines. 4 anchors and 2 connector straps included. Item(s) will ship directly from the manufacturer; delivery options and/or shipping upgrades are unavailable. Please allow 7-10 business days for delivery. Contiguous 48 states only. A street address is required for delivery.