Bondo Fiberglass Repair Kit is a do-it-yourself solution for easy and effective auto body repair. Users can repair cracked, broken or rusted automobile body components quickly, easily and at a fraction of the cost versus part or panel replacement. The kit includes resin and hardener for a permanent, 100% waterproof seal that hardens in as little as two hours and is compatible with most paint.Bondo Fiberglass Repair Kit is a do-it-yourself solution for easy and effective auto body repair. Users can repair cracked, broken or rusted automobile body components quickly, easily and at a fraction of the cost versus part or panel replacement. The kit includes resin and hardener for a permanent, 100% waterproof seal that hardens in as little as two hours and is compatible with most paint.