Birchwood Casey Presto Gun Blue Pen
The fastest and easiest way to touch up nicks and scratches. Birchwood Casey® Presto® gun blue pen penetrates hard steel instantly and gives a durable blue-black finish that won't rub off. Use like a marking pen for one-coat coverage on non-stainless steels. No spill. No drip. Simply rub on with "bullet point" felt tip.