Twin Grind 3603 is a synthetic, chlorine- and nitrite-free, low-foaming and water-soluble coolant that is engineered for grinding operations utilizing hard metals. It contains specific inhibitors that are compatible with non-ferrous metals, preventing staining and discoloration of brass, bronze, or other copper alloys.

Twin Grind 3603 is specifically formulated to prevent interference with carbide binders and will therefore not leach cobalt. When left un-rinsed, the residual coatings provide excellent corrosion protection for ferrous metals.