Presco 6" marking whiskers are an alternative marking choice for survey and construction sites, underground utility locating and many other uses. Virtually indestructible, these APWA color-coded marking whiskers spring back up when run over by lawn mowers, graders and heavy equipment. They are easily and conveniently attached to wood stakes or to 60-penny nails (not included). Use them alone or in conjunction with other marking Products. When a road construction project is completed, Presco Marking Whiskers can be paved over saving you time and the expense of removal. Pink glo color.