Oatey 30204 Pipe Fittings, 32-Ounce Dark Cutting Oil - High speed Dark Oil extends the life of your cutting machines Dark Cutting oil formulated for high-speed cutting machines A special mixture of sulphonated and chlorinated oils provides high film strength Keeps machines running cooler and extends the life of your dies Anti-mist and non-staining formula is not affected by weather Protection helps make sharp clean threads while extending the life of your dies Formulated for hand threading small cutting machines Anti-mist and non-staining formula is not affected by weather