Reflector, Mounting Style Adhesive, Round, Amber, Overall Width 3 5/16 in, Overall Length 3 5/16 in, Overall Diameter 3 1/2 in, Federal Motor Vehicle Safety Standards Met SAE A, Indoor or Outdoor Use Outdoor, Mounting Hardware Included Yes, Permanence Removable, Reflector Material Acrylic, Standards FMVSS, SAE A