Evercoat’s first single step body repair technology specifically designed for large, multi-panel or vertical panel repairs. Its non-sag formula is specially engineered to have excellent filling properties on vertical panels, while eliminating the need for finishing putty. Quantum1 utilizes patent pending 10:1 technology that is the successful integration of polyester and epoxy chemistries. As a result, Quantum1 has less shrinkage, better sandability and better repair holdout than traditional body fillers and putties. Quantum1 also passes 500 hours salt spray (ASTM B117) and is compatible with HAPS-compliant and waterborne coatings. Use with Quantum 10:1 BPO Catalyst (51506A or 51506B) only! The half gallon requiers two tubes of catalyst.