Honing oils and water-based coolants provide needed lubrication, washing away cut material and bringing new abrasive grit to the surface of the stones to maintain optimum cutting action. Quality oils, saturated with surface active agents, provide the necessary lubricity to increase honing pressure and use harder abrasives at faster cutting rates. Similarly, lubricity agents combined with sulphur extreme-pressure additives prevent workpiece welding and tearing while keeping stones clean, resulting in a very consistent surface finish. Specially formulated honing fluids are also are available for use in severe applications in which problems such as galling can occur. Honing oils are available in many different formulations with various levels of viscosity.