This is a set of two Used  Ball Lock Keg Posts for a Cornelius Brand and AEB brand ball lock kegs.  
Metal posts are used but in good working condition and the poppets and post o-rings are brand new.  With the new poppets and o-rings on these posts, they will function as well as new posts!  
NOTE: Because they are used and there were some differences in manufacture they could look slightly different than the photograph. 
These are guaranteed to fit a Cornielius Ball Lock keg.
They will not fit Firestone kegs.