The Bk2 Shaft Is Constructed The Same As All Pred Shafts, Just Different Taper And Finishing Parts, Ferule, Tip And So On. They Have The Same Low Deflection Qualities Of Other Pred Shafts. Alot Of The Performance Of The Bk2 Cue Is Also Due To The Butt, Alot Of Technology Was Put Into The Butt...