Used rocker arm nuts.  These are stock lock nuts, for factory LT1 rocker studs.  All nuts are in good condition, set of 7.  Fits the following:

92-96 LT1 Corvette
93-97 LT1 Camaro
93-97 LT1 Firebird/Trans Am
94-96 LT1 Impala

The item in the picture is the actual item being sold.