Chatters restlessly, seeing some Turners? (8)
I believe the answer is:
ratchets
'some turners?' is the definition.
(tools for turning things)
'chatters restlessly' is the wordplay.
'restlessly' indicates anagramming the letters (I've seen this in other clues).
'chatters' with letters rearranged gives 'RATCHETS'.
'seeing' is the link.
(Other definitions for ratchets that I've seen before include "wheels like these?" , "Devices consisting of toothed wheels and cogs" .)