First-class spinners (4)
I believe the answer is:
tops
I believe this is a double definition.
'first-class' is the first definition.
('tops' can be a synonym of 'first-class')
'spinners' is the second definition.
(things that spin)
(Other definitions for tops that I've seen before include "The Four -, Motown group" , "spinners" , "Maybe puts icing on" , "Beats" , "The best" .)