Hammerite Kurust transforms rust in to a sound surface in only 15 minutes. This product is ideal for small areas of rust, stone ships and scratches and can be used on a multitude of items including fire surrounds, garage doors, BBQs and metal garden furniture to name a few. With no top coat or primer needed this is another easy to use product from Hammerite. • Top coat can be applied after only 3 hours • Simple to apply • Converts iron oxide to stable iron complexes