The pins are made of strong, durable Galvanised steel for rust prevention. Stainless steel constructed garden long staples are wear-resistant, heat-resistant, durable and not easy to corrode. Simply place over the edge of fabric and hammer in place. Properly secure and anchor landscape fabrics, ground coverings and drip irrigation tubing it will help you secure your landscape fabric or dog fence into the ground. They are ideal for securing ground cloth, netting, weed fabric, landscape fabric, pipes and etc. All pins have sharpened points for easy installation. The pins are galvanized for maximum protection.