U-POL Easy 1 Sand filler is a two-component polyester filler used for the filling of holes and imperfections. Extremely light-weight body filler with excellent filling properties. The easiest sanding of all the U-POL body fillers with a high adhesion to a wide range of substrates: steel, aluminium, GRP and wood. Comes supplied in a 3.5 litre tin. Upol.