A lubricant for sinking and intermediate lines that improves casting distance and accuracySink Fast repels water and will actually improve sinking line performance. Designed specifically for sinking and saltwater lines, Sink Fast is a non-toxic, water-based product that cleans, lubricates and protects fly line from the sun&&';;s damaging rays. -Sinking fly line cleaner-Spray cap for easy use-Water based-1 oz