liquid hardener mixes with Fiberglass Resin and Bondo® metal reinforced filler to create high-quality, long-lasting repairs. When hardener is mixed with product, a chemical reaction occurs to create a mixture that will deliver a strong, lasting repair. Our hardener is also easy-to mix.

• Must be used with Bondo® extreme filler or Bondo® liquid resin for fiberglass, cannot be used by itself
• Mixes easily to produce a consistent chemical reaction for fast curing
• Packaged in easy-to-use squeeze tube
• Easy application tube design
• Mixture cures in 20 min for Bondo® extreme filler and 2 hr for Bondo® liquid resin for fiberglass
• Interior or exterior use
• Not to be used with Bondo® short strand fiberglass reinforced filler or Bondo® long strand fiberglass reinforced filler