3M 05860 Dry Guide Coat, 50 g, Dark Gray, Powder3M dry guide coat is used to identify surface imperfections such as pinholes in body filler and deep scratches in primer. Unlike liquid and aerosol guide coats, dry guide coat requires no masking before use and there is no dry time after application. The dry solvent free formula doesn't clog sandpaper and delivers easier cleanup. Used to identify surface imperfections such as pinholes and deep scratches in primer Requires no masking No dry time