ST KOOL 15 SS is High Performance, Long life semi synthetic cutting oil suitable for all moderate machining and grinding application on all ferrous & its alloy metals. The presence of Extreme Pressure Additives provides extended tool life with lower oil consumption. The select corrosion inhibitor provides excellent protection to components & machine. ST KOOL 15 SS is environment friendly product as it doesn’t contain any Phenol, Formaldehyde Releasing component, heavy metal, chlorine and nitrite.