4 x MASTER GLASS FIBER STRUCTURAL CAR BODY FILLER 3LTR 12 X FILLE HARDENER TUBE Description :Smooth textured, tack-free finishEasy spreading and quick to shapeNon-sagging when used on vertical surfacesAn easy to use, smooth textured polyester filler for deep repairs. The non-sag formula is ideal for use on vertical or horizontal repairs and its lightweight formula bonds to multiple substrates including galvanised steel, metal and GRP.