You are buying a brand new set of steel freeze plugs made in the USA for the following engine.

GM Car 4.3L / 262 OHV V6 12V "Z" 4.000" Bore 1985-1993

GM Truck, Van, SUV  4.3L / 262 OHV V6 12V 4.000" Bore 1985-2014

GM Truck, Van, SUV  4.3L / 262 OHV V6 12V 4.000" "Z" Bore 1991-1993

Any questions feel free to ask.