Fast Sanding Body Filler – This general purpose light weight polyester body filler is excellent for applying thin skim coats of filler over larger areas. Contains additives to promote adhesion to galvanized steel, aluminum, SMC, E-Coats, and bare steel. Hattonite helps assure fast easy sanding. Top coat the leveled filler with Eurosoft Glazing Putty (31079ZP) and/or primer before applying color coat. Contains .8 gallon with 2.75 oz hardener.