ACERBIS Track Marker Box 56/Pc Yellow - Part Number 2320829999Acerbis track markers are highly visible yellow plastic stakes that are easily installed in the dirt on the side of the track. Not only do these stakes give the track a clean, professional appearance, they also are safer and easy to move than hay bales. As hay bales sit at the edge of the track, they become water logged from track watering. This can make them almost impossible to move, and hitting one or catching one with a footpeg almost always