Itw fluid products group offers a range of metal working fluids. This includes the following five types of fluids: ws 600n - economical water soluble cutting oil, specially formulated for centralised systems, where coolant life has to withstand heavy loads of dirt. Suitable for general machining and grinding applications; ws 500nr - long life, economical, water-soluble cutting oil, suitable for all light machining applications and grinding applications in automotive and engi neering industries; rustlick ws 5050 - heavy duty, water soluble, metal working fluid suitable for all types of machining applications in automotive and engineering industries. Compatible with all metals except magnesium and titanium; ws 500n - long life, economical, water-soluble cutting oil, suitable for all light machining applications and grinding applications in automotive and engi neering industries; and ws 40hw - hard water stable, long life water soluble metal working fluid suitable for most types of machining and grinding applications.