Epifanes One-Part thinners for spray application to be used with the One-Part MonoUrethane Topside Finishes, as well as their one-part primers and all of their Varnishes (except the two part). The ideal thinners for Epifanes famous Gloss Clear Varnish, Wood Finish Gloss (and Matte) and the Rubbed Effect Varnish. Made from a pure white spirit for a clear application