Fantastic Ultra Lightweight Body Filler for Medium Depth RepairsAn ultra lightweight multi-functional filler ideal for medium and fine panel damage in most substrates. Formulated using the latest lightweight technology, it combines excellent filling properties with ease of sanding.Soft and smooth formulaSuperb sanding for reduced process timeEasy to shape and no shrinkageBPO Hardener for Polyester Body FillersHardening agent designed to be used with all U-POL polyester fillers.Unique sachet packaging and tube for U-POL dispenser