Injured Wales centre Jonathan Davies believes his country's half-back combination can push the team to great things at this year's World Cup.
Rhys Webb and Dan Biggar, who have played together since a young age, should continue their excellent partnership at the upcoming global showpiece.
And Davies is backing them to shine as they have done for the Ospreys and Wales over recent seasons, saying there is a "sixth sense" between the pair.
"They do work really well together," he told the South Wales Evening Post.
"Having a partnership at regional level helps, but with Dan and Rhys they have spent their entire senior careers together stretching back to under-20s level, when I was in the same squad as them.
"They have a bit of a sixth-sense thing going on. They understand what the other is going to do next and react accordingly.
"Both of them played well last season and I'm sure they'll carry that form into the World Cup."