For one reason or another, you may run out of one component of PropSpeed's Foul Release System Kit.
If you need more of the Clear Top Coat, this is what you want to buy.
This non-toxic slick topcoat repels marine growth, lowering the vessel's operating costs while improving fuel economy and speed.
Contains 400 ml Clear Top Coat.
This is the amount supplied in the 1000 ml Propspeed Kit (PRS 782A).