RTD Liquid Manual application lubricant for metalworking Ultimate cutting performance Flows to the cutting edge Oil and solvent free Suitable for automatic application on CNC machines Silicone free Viscous metalworking fluid with extreme pressure additives, suitable for reaming, tapping, drilling and other metalworking processes. Suitable for all metals including hardened steel, titanium and nimonics. Significantly reduces friction and ensures excellent cutting performance. RTD Liquid can also be added to regular mineral cutting oil for the most demanding operations such as broaching and gear cutting on the hardest metals.