Go for; tool (4)
I believe the answer is:
pick
This clue is a double definition.
'go for' is the first definition.
'tool' is the second definition.
(I know that pick is a tool)
(Other definitions for pick that I've seen before include "The best tool" , "tool - it breaks" , "Choose - ground-breaking instrument" , "Selection" , "Choose, select" .)