This premium 4:1 high-build primer from BodyShop Essentials delivers exceptional filling capabilities and superior adhesion for professional automotive refinishing. The 1-gallon liquid formula is engineered to provide strong coat-to-coat bonding, ensuring a seamless foundation for your paint system. Designed with flexibility and impact resistance in mind, this black primer performs exceptionally well on both multi-panel repairs and complete vehicle refinish jobs. The 4:1 mix ratio works with the recommended BSEP702 normal hardener for optimal results - hardener sold separately. Its high-build formulation effectively fills minor surface imperfections while maintaining excellent adhesion to automotive surfaces. Whether you're working on interior or exterior applications, this primer provides the professional-grade performance needed for quality refinishing work. The matte finish creates an ideal surface for subsequent coating layers, making it a reliable choice for body shop professionals and automotive enthusiasts alike.