7 oz concentrate for blackening steel.  Mix 9 to 1 with water.  Makes 1/2 gallon of blackening solution.  Works in 2-6 minutes.     
The pictures show steel objects submerged for 30 seconds.  Significant blackening action takes place in 30 seconds. Directions instruct to submerge for 2-6 minutes.
This one 7 oz bottle of concentrate will blacken a LOT of items and you can store it after it is mixed for blackening at a later date.

It will not blacken copper, brass, aluminum, or stainless steel, 


Here is some feedback from customers:

Great item. Very fast shipping. Works awesome. Gun looks brand new 

Buyer:

Member id kaplanj1189 ( Feedback Score Of 206Teal star icon for feedback score in between 100 to 499)

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 AWESOME this is the best gun bluing chemical i've ever seen, i'll be buying more 

Buyer:

Member id amcg5835 ( Feedback Score Of 73Blue star icon for feedback score in between 50 to 99)

  great product using at my gun shop excellent service and timely delivery awesome !!

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Buyer:

Member id ofdunk 

Great stuff ! Gives quality results and is easy to work with. Thanks!



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Buyer:

Member id ad5lq Feedback Score Of 600

Seems to work well at 6-8:1. Bargain compared to Retail bluing

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Buyer:

Member id iseecrap Feedback Score Of 302

Powerful stuff! Works great !!! AAA+++++

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