SAFKOOL 6420 is a water emulsifiable metalworking fluid concentrate dedicated for all grinding and machining operations that require high cooling and high lubricating properties. SAFKOOL 6420 is recommended for the machining of ferrous and non-ferrous alloys, including aerospace aluminum alloys, nickel and titanium. Based on a very specific chemistry, SAFKOOL 6420 is suitable for dilution in both soft and hard water.