Birchwood Casey 13201 Presto Gun Blue Touch-Up Felt Pen
Birchwood Casey
The longest lasting finish, but slower to darken than the liquid blues. Easy to use, Perma blue paste gun blue reacts slowly with the metal but builds up a denser finish that will outlast the liquid blues. Excellent for touch up or complete reblueing.
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$6.54Closest matches by brand, type, and specifications.