Designed to quickly add more height to any project. Simply slide the Stacking Joint into the joint below for a rigid support, then add the composite timbers or 2" x 6" sawn lumber planking to the brackets which turn through 360 degrees for a second or more level. Made of high impact ABS plastic with a 5.5" inground depth Each pack contains 2 stacking stakes, 4 brackets, 2 caps and hardware.