Jarron Costelloe will join Michael Doolan, SImon Fonua, Mark Griffiths and Joey Tramontana in Origin camp, having been named as 18th man.
The NSW side will play the Queensland Under 16s team at ANZ Stadium on June 5, prior to the first NRL State of Origin match.
Congratulations to all five boys - it's a fantastic achievement.
Also a big congratulations to Glen Vanderwert, who has been selected as the team Manager - Glen was the manager of the very successful Harold Matthews Cup premiership winning side.
Here is the full NSW Under 16s Representative side.
Nat Butcher - South Sydney Rabbitohs
Jack Cogger - Newcastle Knights
Michael Doolan - Parramatta Eels
Simon Fonua - Parramatta Eels
Robbie Graham - Penrith Panthers
Mark Griffiths - Parramatta Eels
Gabriel Hamlin - South Sydney Rabbitohs
Ryan King - Illawarra Steelers
Brock Lamb - Newcastle Knights
Blake Lawrie - Illawarra Steelers
Latrell Mitchell - Central Coast Centurions
Pifeleti Pifeleti - Balmain Tigers
Jessie Ramien - Manly Warringah Sea Eagles
Ethan Roberts - South Grafton Rebels
Reimis Smith - South Sydney Rabbitohs
Ray Stone - Western Suburbs Magpies
Joey Tramontana - Parramatta Eels
18th man: Jarron Costelloe - Parramatta Eels
Coach: Dave Howlett - Cronulla Sharks
Manager: Glen Vanderwert - Parramatta Eels