We offer three sets of boundary anchors. Zinc plated steel pegs that are .25-inch thick. Plastic ABS peg set that is 10-inch long. UV treated polyethylene plastic plates that are approximately 4-inch square by 1/4-inch thick. You bury the plates down into the sand about a foot. The weight of the sand is what holds them in place. <p>Each set has approximate 2-foot of 1/4-inch thick bungee cord and a small s-hook attached on one end. The bungee cord allows the court line to be suspended between the four pegs. Enabling the boundary to form a perfect rectangle and will stretch when tripped on for added safety.</p><p>The 10-inch long ABS plastic boundary pegs are better suited for sand use, however will work in loose soil without rocks. Not recommend for hard ground setup as any plastic stake will not last long after repeated poundings into the ground. </p>