3M Bondo Jelly Fiberglass Resin. Quart. Milled fiberglass reinforced, non-drip jelly formula. Recommended for repairing and filling rust-outs on metal, wood, plastic, fiberglass autobodies, campers, farm equipment and snowmobiles. Spreads easily and is sandable in only 20 to 30 minutes. Can be used with fiberglass cloth or mat if additional strength is needed. Compatible with all paints. Waterproof. Includes resin and red cream hardener. Non-drip resin jelly spreads easily and will not run for cleaner and easier repairs.