Birchwood Casey Brass Black Touch-Up Bottle 32oz. easy to apply with no dimensional change. Often used to mark cartridge cases to identify loads. Excellent for blackening name plates plaques castings sculptures and other home workshop and hobby uses. color varies depending on alloy and can be highlighted if desired. Final appearance is enhanced by applying a clear coat finish wax or oil. Specifications for Birchwood Casey Brass Black Touch-Up Bottle: Manufacturer: Birchwood Casey Quantity: 1 Included Accessories: Standard Volume: 32 oz Package Contents: Birchwood Casey Brass Black Touch-Up Bottle Standard Birchwood Casey BC-15232: Brass Black Touch-Up Bottle 32oz