3M Bondo Short Strand Fiberglass Reinforced Filler 21 oz (595.34 g) with Bondo Cream Hardener 0.5 oz (14g), Repair Holes Up To 0.5 IN, Waterproof (SS-PT-ES)

Fiberglass strands and fibers make it twice as strong as regular body filler, Covers small (up to ½”) holes without the need for backing strips, fiberglass resin or cloth, Excellent as a foundation for hole, dent and rust-out repair, Can be paired with body filler and glaze for complete repairs, Sandable in as little as 20 minutes for quick repairs, Compatible with most paints, For industrial/occupational use only. Not for consumer sale or use.