Birchwood's brass black touch-up is a fast acting liquid used by gunsmiths and industry to blacken or antique brass, copper and bronze parts.It is easy to apply with no dimensional change and 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.Type: Black Metal FinishSize: 3 ozQuantity: 1Material: MultipleSuitable For: FirearmsHazair: Yes