Toyo 3-12Mm Glass Cutting Fluid Is A Type Of Coolant And Lubricant Used In A Lot Of Different Metalworking And Machining Processes. It Is Used To Keep The Machine Cool And Reduce Friction, Thereby Increasing The Overall Life Of The Tool And Reducing The Amount Of Energy Consumed. In Glass Work, Cutting Fluid Is Especially Important Because It Produces A Cleaner Surface.