Birchwood Casey Super Blue

Concentrated double strength cold blue/black. Use on difficult to blue steel. Deep penetrating, no rust or lap marks. 3 oz.  

Shipping Restriction - this item is a dangerous good and must be shipped via ground transportation to a physical address (Cannot ship to a PO Box or Rural Route). An additional shipping charge may apply.

Note: This item must be shipped ground only and cannot be shipped expedited or express.