Star Brite Instant Hull Cleaner Features: • 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)