Super-Edg’s heavy-duty, 100% recycled PVC construction makes it safer and more economical than metal edgings. Super-Edg is manufactured with pre-cut slots for staking and they are spaced every 2 feet. Oly-Ola provides 1 stake for every 2 holes with your purchase. If your design is elaborate or has lots of joints/curves, we recommend purchasing extra stakes. Super-Edg is made with high grade, recycled PVC, with no fillers or blown in materials. It is made to last!