GK Livestock, Dalby Queensland, took out best exhibit Simmental at the Sydney Royal Show.
The stud went on to also win the best exhibit award in the Red Angus ring.
The stud's star of the Simmentals was GK Que Sera K17, the junior and grand champion bull.
Exhibited by the Iseppi family, the young bull weighed 614 kilograms.
The Simmental judging was done by Glenn Trout, Birubi Limousin stud, Wagga Wagga, who said the bull was a real game changer.
“He has that depth from the front to the back and stands eye above spine,” he said.
"Stands square and has full cover all over.
“Has a lovely kind eye”
Mr Trout said he could talk all day about the junior bull.
Mala-Daki Rosanne H565, won the senior and grand champion female and was exhibited by Jason Impey, Crookwell.