3M 20058 Cream Hardener, Liquid, Slight Ester, Red, 2.75 fl-oz Tube

Bondo all-purpose white cream hardener mixes with 2-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. Our hardener is smooth and easy to mix with fillers, putties and glazes.