Pig crate needs repair — details of damage on label (5,3)
I believe the answer is:
price tag
'details of damage on label' is the definition.
(damage can mean what something costs)
'pig crate needs repair' is the wordplay.
'needs repair' is an anagram indicator (I've seen this in other clues).
'pig'+'crate'='pigcrate'
'pigcrate' is an anagram of 'PRICE TAG'.
(Other definitions for price tag that I've seen before include "This shows what it should cost" , "What a ticket may show" , "Label indicating cost" , "Label showing cost" , "Indication of cost" .)