... later, synthetic light blue bristles, tin-plated ferrule, smooth handle surface3.White natural bristle, round edged polished ... SYNTHETIC very light BROWN, beige BRISTLES, Stainless Ferrule, Smooth handle surface, No sheddingItem name :radiator brushBristle Materials : high ... bristle , 60% -80% top boiled white brstleHandle : smooth surface wooden handle , unlacquered handleWe can supply you 1-4inch . ...