Fight to acquire commercial tool (7)
I believe the answer is:
bradawl
'tool' is the definition.
(I know that Bradawl is a type of tool)
'fight to acquire commercial' is the wordplay.
'fight' becomes 'brawl' (brawl is a kind of fight).
'to acquire' indicates putting letters inside.
'commercial' becomes 'ad' (abbreviation for advertisement).
'brawl' going around 'ad' is 'BRADAWL'.
(Other definitions for bradawl that I've seen before include "Tool for making holes in wood" , "One may be boring" , "Boring article" , "one that bores" , "Boring tool" .)