U-POL ToughFill 2-Part Filler that fills to any depth, can be drilled, screwed or nailed as is load bearing. For high demand environments both interior and exterior, polyester filler that is easy to sand with 60 - 80 grit and hardens in approximately 20 minutes. It adheres to wood, metal, concrete and masonry and does not slump and can be over coated with any paint. ToughFill is ideal for multi-purpose applications such as; filling holes, damaged edges, splits and shakes in timber, mending metal pipes and securing bolts and screws. Filling cracks and holes in concrete, and building up damaged areas, also repairing and skim coating GRP. Model and pattern making and also dents in cars and metal vehicle bodies. Mixing ToughFill, mix 2 parts hardener to 100 parts filler, tin contains 1.1 litres of filler, and one squeezable bags with re-seal able screw-fit caps containing hardener and one spreader.