This is a US3601-1 BCC Adhesive-Primer Lt Gray. Sticks to smooth or textured TPO plastics, ideal for easy refinishing of new, unprimed OEM replacement bumpers from Toyota, Nissan, Kia, Subaru etc. Sticks to TPO plastic without sanding or scuffing. Compatible with most urethane & polyester-based clear topcoat systems. Bumper & cladding adhesion primer does not have to be scuffed or sanded prior to topcoating & it may be topcoated at any time after application.