Keeps going and breaking slats (5)
I believe the answer is:
lasts
'keeps going' is the definition.
(I've seen this in another clue)
'breaking slats' is the wordplay.
'breaking' is an anagram indicator.
'slats' with letters rearranged gives 'LASTS'.
'and' is the link.
(Other definitions for lasts that I've seen before include "Cobblers' tools" , "Keeps on" , "Goes on" , "carries on" , "Endures" .)