Old copper kitchen tool (6)
I believe the answer is:
peeler
I believe this is a double definition.
'old copper' is the first definition.
(I've seen this before)
'kitchen tool' is the second definition.
(I've seen this in another clue)
(Other definitions for peeler that I've seen before include "Devious type" , "Old policeman (useful for potatoes!)" , "Potato skinner" , "Kitchen knife" , "stripper" .)