Corner Anchor Joints and Corner Stacking Joints make building raised garden beds easy! Corner Anchor Joints are a simple way to anchor down raised garden beds and garden borders, even in the harshest climates. Gardeners just drive the barbed stake into the ground, and it stays put! The brackets secure garden border planks to create an enclosure or landscape edging. 10.25"in-ground depth. To add a little height, add Corner Stacking Joints into the mix! They simply slide into the joint below for rigid support of an additional level of border planks. Each kit contains two anchor or stacking stakes, four brackets, two caps, and hardware. Made of high-quality, temperature-resistant recycled ABS plastic.