HOPPE’S FOAMING BORE CLEANER
>>Quickly and effortlessly
dissolves and removes copper
and
powder residue. Its superior
cleaning formula does the work
for you, no brushing or other
mechanical cleaning necessary.
Orange foam will turn blue
indicating copper removal or
black
indicating powder removal.
<>One-Step.
<>No Harsh Scrubbing.
??<>Colour Change
Effectiveness Indicator.