Primer - 240mlPart of a two-component 4:1 etching primer. Once mixed with the PropOne Activator, the Primer chemically dries to protect metallic surfaces against corrosion and allow adhesion of the PropOne Clear Coat. Suitable for ferrous & non-ferrous metals.NOTE: This product is the PropOne Primer only. Other components are sold separately.PropOne is a non-toxic foul-release coating that prevents sea life from adhering to propellers and underwater running gear. It is used on thousands of boats worldwide every year, with a proven track record of over 8 years. Non-stick, super slick coating that lasts 1-2 years in water! It works, it&&';;s the one. No.1 Foul release coating for propellers and running gear. Proven season after season to keep your propellers and running gear clean. PropOne is used on many thousands of boats worldwide every year, with a proven track record of over 8 years.