Sanjay Dutt and Ajay Devgn are back again in "Rascals" and the latter feels the duo is going to make people laugh in the film as they share amazing on-screen chemistry.

The duo worked in 2009 in "All The Best" where they had managed to tickle the funny bone of the audiences with their impeccable comic timings. Now, Ajay stars in Sanjay's first production venture.

"I think it's fabulous. More than friends, we are brothers. Our rapport is seen on the screen. The timing of humour was seen in 'All the Best' and you will see it in 'Rascals'," Ajay said.

"That is where you understand that if the rapport of the actors is good then the humour and the timing comes out very well," Ajay told reporters here.

The star cast is busy promoting the film as it is set to release Oct 6.

The 42-year-old believes promos play a pivotal role in generating curiosity for the film.

"The most important promotional tools are promos that come on television. If audiences like that, then all you have to do is to make people aware of the date of release. Otherwise, no matter how you promote, if people do not like the promos then nothing can happen," he added.

Directed by David Dhawan, "Rascals" also has Kangana Ranaut and Arjun Rampal in lead roles.