Birchwood Casey Presto gun bluing pen
Birchwood Casey Bluing touchup pen – gloss. 1/3 oz.
The fastest and easiest way to touch up nicks and scratches is with a simple easy to use Presto Gun Blue Pen. It penetrates hard steel instantly and gives a durable blue black finish that will not rub off. Use like a marking pen for one coat coverage on non-stainless steels.