• Optex Super Build 4:1 Primer highlights dents, low spots, scratches, and other surface imperfections while at the same time eliminating the need for messy carbon black powdered guide coats.
• This 4:1 primer sprays on pink and turns gray as it is sanded, revealing high spots while low spots and scratches remain pink.
• Hardener sold separately. Uses 733 or 734.