Propshield Antifouling Grease whilst still in its infancy is fast becoming known throughout the maritime world as the market leader in stern gear antifouling. Our product is undoubtedly the best value stern gear antifouling on the market to date, and is the only widely available product which actively protects your stern gear in the most foul of waters guaranteed! Get on board with the Propshield experience and you wont want to get back off!