Proform stamped rockers?

Ordered a new set of proform hardened and carburized stamped steel rockers. Now my dilemma is can i use my existing rocker shafts which are stock. They are not worn. But in the description of the proform rockers they push to buy their hardened shafts but will work with factory hardware? Huh?:eek: Can someone here shed some light. Am i overreacting?!