Reflector Mounting Style Screws Bolts or Rivets Adhesive Rectangular Clear Overall Width 12 in Overall Length 1 3/32 in Federal Motor Vehicle Safety Standards Met FMVSS 108 Indoor or Outdoor Use Outdoor Mounting Hardware Included Yes Number of Mounting Holes 2 Permanence Permanent Reflector Material Plastic Standards Meets or exceeds DOT-C and SAE J594f for reflectivity markings on trucks and trailer