Warner will lower the sweet spot on his bat and have a slightly heavier blade to counter the expected lower bounce, while Smith will retain the bats he uses in Australia.

A heavier bat will slow Warner's swing, giving him greater control on the slow decks expected to take sharp turn and favour Indian spinners Ravichandran Ashwin and Ravindra Jadeja. Warner's Gray-Nicolls Kaboom bat typically weighs 1.23 kilograms in Australia but in India he is expected use a blade weighing 1.28 kilograms.

The dynamic opener will be particularly keen for a big series on the sub-continent, for he averaged a modest 24.37 in four Tests on the miserable "homework-gate" tour of 2013. He averages 40.36 in 12 Tests against India, with four centuries - but all has been on home shores.

Australia's top-level players are meticulous in their approach to the finer points of their bats and the willow used. Glenn Maxwell is one who prefers to have a lower sweet spot in all conditions, in a bid to have greater control over his strokes.

Warner's Kaboom blade that he uses in Australia is likely to require a shave if, as expected, new laws on the size of bats recommended by the Marylebone Cricket Club are introduced from October. These changes shape as being only for Tests and first-class matches, allowing  the bigger blades to  be used in the shorter formats.

Bat manufacturers believe the maximum size of the edges could be reduced to 40 millimetres , with the overall depth 67 millimetres. Such has been the growth in bat sizes in the past decade that the Kaboom has measured almost 85 millimetres at its fattest part. The edges of bats are almost three times the size they were decades ago, sparking concerns the battle between bat and ball was too heavily favoured to the former.

India's fast outfields in next month's four-Test series will add to the advantage batsmen enjoy when their edges - and strokes - clear the infield.

Matt Renshaw's hopes of experiencing this have been boosted with Darren Lehmann, the coach and a national selector, now suggesting the opener will at least be part of the touring squad.

Renshaw, recovering from concussion during the Sydney Test, had posted 315 runs at an average of 63, including a first-innings 184 at the SCG, since making his debut against South Africa in Adelaide. But, after the Sydney Test, Lehmann  indicated the Queenslander was no certainty to head to India, declaring: "It's hard to leave a bloke who made 180 out of the side, but we've done it before." That being Shaun Marsh after his century against the West Indies at Bellerive  last summer. He made way for Usman Khawaja, returning from injury, in Melbourne.

But Lehmann has since said on FiveAA radio that Renshaw is likely to tour.

"I would think so. Obviously, we'll wait until the side is picked and announced but I think he would be pretty stiff to miss out on the squad," he said.

"Having said that, we have obviously got to look at who is going to play really well over there, that's the key. But he is a young man, you would think he is going to tour there at some stage in his career. The good thing is he  in some form and that's what you need when you go over there."