Mothers 91624 Marine Black Streak Remover - 24 Oz.Mothers Marine Black Streak Remover - 24 ounce has been formulated to quickly and easily remove those unsightly black streaks from gel coats, fiberglass or metal.Features of Mothers 91624 Marine Black Streak Remover - 24 Oz. Formulated to quickly and easily remove those unsightly black streaks Works..