Star Brite Instant Hull CleanerFeatures:• Does not contain harmful acids, safe and easy to use.• Quickly removes stains from water line.• Excellent for use on fiberglass, metal and painted surfaces.• Cleans scum lines and stains on boat hulls easily and effortlessly• Safe for use on fiberglass and painted surfaces• Instantly removes stains from grassy marine growth, rust, scum line, fish blood etc.• No rubbing or scrubbing• Size: 32 fl. oz.(946 ml)