You cannot do without it if you appreciate a superb and complete cleansing of your gun. Oil and grease are 100% removed from metallic surfaces, even persistent remainders of grease and resin will disappear without any problems using Cold Degreaser. Also for the cleaning and pre-treatment of surfaces in metal processing or in workshops. Cold Degreaser is ideally suited to the cleaning of brake disks and for cleaning prior to completing painting work. Ideal as a preliminary treatment to the browning process with Quickbrowning.