Birchwood Casey Super Blue bluing offers you the ability to quickly repair damaged or marred steel parts.

The parts must be thoroughly degreased before using bluing.
The color varies from dark gray to black depending on the composition of the metal.

Birchwood Casey Super Blue is more powerful/agressive than Birchwood Casey Perma Blue and gives the darkes results.

Traditional warm bluing naturally gives better results than cold bluing for larger surfaces, but for small surfaces this is a very good and price-friendly alternative.