The 18" Red Hazard Markers with Spikes are a reliable tool designed to clearly mark out-of-bounds areas on golf courses. Made from environmentally friendly recycled plastic, these markers provide an eco-conscious solution for course maintenance. The red colored markers ensure high visibility, making it easy for players to identify the boundaries of the course. Standing 18” tall, they are equipped with a durable stainless steel spike for quick and secure installation into the ground.