India's stand-in captain Gautam Gambhir was all praise for the fine show put up by the young players in the just-concluded series against the West Indies but warned that a tougher test lies ahead for them during the upcoming tour of Australia.

"It always helps to get runs under your belt but in Australia those are different conditions. We all know this is not what we're going to get in Australia. Australians are tough nuts to crack and will come hard at us," Gambhir said after completing a 4-1 ODI series triumph over the West Indies in Chennai on Sunday.

Gambhir said players should also have mental toughness to excel in Australia, besides technical skills. "That's where your mental toughness will be tested the maximum. You will be getting a quality attack and they will be coming hard at you. I think one good thing is the guys that have gone early (to Australia) will be able to acclimatise (to the conditions). And we're playing two practice games this time."