"I think everyone in the squad has got an opportunity and those two are the same.
"Tom is similar to Kristian. He's going to be very quick, pretty elusive. Again, when you've got gas like that you've got to use it.
"He's very good with ball in hand, a young kid, probably defensively he's pretty good, but obviously he can keep improving and he's a pretty good kicker as well.
"So exciting players, both of them. They like to play with the ball in hand, like to run - typical Welsh players, if you like.
"Kristian's been pretty impressive for Neath, scoring a lot of tries and likes to back his pace as well.
Archive - Five-star Kristian Phillips
"But when he was younger has played at centre, played at outside half as well.
"So he's played in a lot of positions in the back line and knows the game pretty well so I'm looking forward to seeing him come in and enjoy training with us."
Phillips suffered two shoulder dislocations the season after making his Ospreys debut, knocking back his progress.
"Kristian is a very good player. He's come back from a few injuries, serious injuries, and he just seems to get better and better," added Jenkins.
"It will give them a taste, hopefully, of what's to come for them when they get selected in the future
"But who knows? They might stand out so much that they could be involved."
Wales have issues on the wing as Mark Jones is sidelined by a knee injury and Tom James is still considered raw alongside experienced Welsh record try-scorer Shane Williams.
Leigh Halfpenny is also in the back-three mix completed by Lee Byrne.
Ospreys star Williams, who is 33 next month, has only recently returned from a hamstring tear and has only played two minutes of rugby since sustaining his injury in Wales' final autumn series defeat to Australia.
Wales' 35-man Six Nations squad:
Backs: Gareth Cooper, Leigh Halfpenny, Tom James, Richard Rees, Jamie Roberts, Tom Shanklin (all Cardiff Blues) Dan Biggar, Andrew Bishop, Lee Byrne, James Hook, Kristian Phillips, Tom Prydie, Shane Williams (all Ospreys), Jonathan Davies, Stephen Jones, Martin Roberts (all Scarlets)
Forwards: Bradley Davies, Gethin Jenkins, Deiniol Jones, Andy Powell, Sam Warburton, Gareth Williams, Martyn Williams (all Cardiff Blues), Huw Bennett, Ian Gough, Paul James, Adam Jones, Alun Wyn Jones, Ryan Jones, Jonathan Thomas (all Ospreys), Matthew Rees (Scarlets), Luke Charteris, Dan Lydiate (both Dragons), Eifion Lewis-Roberts (Sale Sharks), Rhys Gill (Saracens)
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