Barrel Brown & Degreaser - 2.5 oz

I've tried several brands, and this is the best browning formula available, providing a deep even brown finish even if your parts aren't totally oil free. But be careful when carding the rust the first few times before color has started to build up, because you can rub the finish out! It also makes a good rust blue if you boil the parts (in rain or distilled water) between applications.