DYKEM Hi-Spot is an intensely blue, soft, uniform paste that spreads quickly and evenly to show high spots on bearings. It is most valuable when used on flat-bearing surfaces of lathes, planers, milling machines, etc. A thin coating may be left on the surface day in and day out and will not dry. The film remains wet and transferable and in condition for months. No nightly clean-up or morning re-bluing is necessary. Non-drying Non-hardening Transfers from one surface to another Saves valuable time and money in surface scraping work