GAMMA Court Marker Lines - 24 Line Set of non-skid lines to create corners and some touchpoints for a tennis court. This set will, when placed on the ground, provide a rough court outline using 8 straight lines and 4 corners. Four corners mark the exterior court boundaries, with 8 straight edges to represent guidelines for additional court markings. These durable pieces will ensure hours of play for beginners to the experienced tennis players- even in temporary locations.