Even bits of hatchets provide good service (4)
I believe the answer is:
aces
'good service' is the definition.
'aces' can be an answer for 'service' (I have seen 'excellent service' mean 'aces' so perhaps 'service' could also mean 'aces'). I am unsure of the 'good' bit.
'even bits of hatchets' is the wordplay.
'even bits of' means one should take alternating letters.
The alternating letters of 'hatchets' are 'ACES'.
'provide' acts as a link.
Can you help me to learn more?
(Other definitions for aces that I've seen before include "Experts (in their field)" , "Top cards or people" , "Case of top cards" , "Unreturnable services" , "Flying war heroes" .)