Hempel's Hard Racing 7142H is a hard antifouling (insoluble matrix) based on cuprous oxide. It changes to its final colour after approximately 1 week of exposure to water.
Area of use-
As an antifouling for boats of glass fibre, wood, plywood, steel and ferro-cement. Do not use on aluminium or other-light alloy metals. Risk of corrosion in case of direct contact.