Peel And Stick Fire Hydrant Blue Road & Pavement Marker For Asphalt Or Concrete Only Quick and Easy Installation. No Glue or Epoxy Needed Commercial Grade TYPE BB 10oz Blue Marker Commercial Grade Apex 2-Way Blue Reflective Pavement Marker With Butyl Pad Attached To Rough/Sand Backing Meets DOT And CA HCD Requirements For Fire Hydrant Identification Peel And Stick Commercial Fire Hydrant Pavement Marker Blue Dot Kit, 2Way, With Butyl Pad, 4 x 4. Commercial Highway Grade Prismatic Retroreflective Pavement Marker, Blue, BB Measurements: 4 x 4 Weight 10 ounces These pavement markers can be installed extremely easily. No more glue, or epoxy mixing. Just peel off the white backing and stick to the asphalt or concrete surface. Markers consist of an ABS plastic shell filled with a tightly adherent potting compound. The shell contains two glass covered prismatic retroreflective faces as required to reflect light from opposite directions. Each Package Includes: (1) Commercial Grade Apex 2Way Blue Reflective Pavement Marker With Butyl Pad Attached To RoughSand Backing How To Install: 1. Clean surface to ensure no loose debris (Concrete or Asphalt Only) 2. Remove pavement marker from plastic packaging 3. Peel white film off to expose butyl pad surface 4. Place pavement marker firmly on the ground horizontally 5. Step on pavement marker to affix firmly DO NOT install on wet or loose road surfaces such as gravel, sand, dirt, or mud as they will not stay down. Must be installed on DRY surfaces.