KEM FIBRE MICRO. Kem Fibre Micro is suitable for reairing of tears and dents, and the strengthening of weak spots in car bodies. Thanks to flexible polyester resins and short fibres, the putty has a high flexibility with high mechanical strength and soft sanding properties. Universal adhesion on all metals, even on zinc, covered steel, aluminium and old paint layers after sanding and degreasing. Do not use on washprimer and 1-component acrylics.