The liberon libho250 honing oil has the following purpose ideal for cleaning and reviving oilstones that have become dirty or clogged with greasy oil liberon honing oil is specially formulated to clean and lubricate the oilstone while sharpening tools performance lubricant for tool sharpening on oilstones cleans dirty stones reduces clogging of the stone from metal particles helps to produce sharper tools usage interior important information only use on flat static oilstones do not use