Bondo Fiberglass Resin Jelly features tiny milled glass fibers that add strength and provide a thicker consistency for filling holes and rust-outs in auto body repair. This formula is ideal for vertical work such as car doors or boat hulls where standard resin can drip down the surface and cause extra work and cleanup. Also, there's no need for fiberglass mats, cloths and backing strips with small holes which cuts down on work time. For repairing larger holes where even more strength is needed, these added materials can be easily used. Fills small holes and can be used with backing strips, fiberglass mat or cloth Non-drip resin jelly spreads easily and won't run for cleaner and easier repairs Sandable in as little as 20 minutes Compatible with most paints Waterproof formula works for cars and boats
