3M Bondo 0.75 Oz. Blue Cream Body Filler Hardener

Bondo Blue Cream Hardener mixes with two-part fillers, putties and glazes to create high-quality, long-lasting repairs. When filler and hardener are mixed, a chemical reaction occurs to create a mixture that will deliver a strong, lasting repair. Hardener is smooth and easy to mix with fillers, putties and glazes.