Highest rated episode of the series.
The title for this episode relates to the two rings Jax wears, 'SO' and 'NS'. Early on in the season he leaves SO on his fathers headstone, leaving NS at the end.
In the school bus, towards the end of the episode, Chibs (Tommy Flanagan) is drinking a juice box of Jameson Irish Whiskey.
The noise that the Prospects following the ATF van make when they ride past and beep is Morse code signal 'A-F-F-A'. This is likely to stand for 'Anarchy Forever. Forever Anarchy'.
The post code for Ashby's Provisions (BT48 8BA) is actually the post code for the Greenhaw Primary School at Carnhill, Derry, Northern Ireland.