Blue Water Marine Bottom Protect 8000A / 8000B is a heavy duty 3:1 epoxy primer that provides a seamless epoxy coating that creates a high build water barrier that eliminates any direct path for water migration. For ultimate gelcoat and fiberglass hull protection system, first apply High Build Epoxy Sealer and overcoat with this Epoxy Primer Kit and finish with antifoulant paint. Application of epoxy primer prevents water absorption and subsequent blistering of your boat's fiberglass hull. It is also an excellent anti-corrosive substrate primer for all underwater metals, keels, aluminum, steel, lead, cast iron, stainless, and bronze. One gallon kit consists of 3/4 gallon Part A Base and one quart Part B Activator. Replacement for Interprotect 1000E / 1001E and Interlux Interprotect 2000E / 2001E.