The shaft has a carbon fiber reinforced core. Predator claims that it provides better transfer of force from cue to ball than an all-wood shaft would. Don't have a BK3 myself so I can't comment one way or the other, but that's what they're claiming.
Take it for what its worth but its more marketing then anything.
When you are running out of ideas,you start looking at ''New''ideas but
unfortunately this is old news. McDermott has being doing this for years with there ishaft line.
The 2nd thing I've heard that could be phooey is they've had so many
returns and issues with there break-shafts delaminating that going
to a shaft without the splices could save them alot of time and
money with the shaft being non-laminated.
Personally I don't like them straying away from there laminated shaft.