These were used for games and basic practice in a social circle for adults. The main ones are New Official and Aerosensa 700, with a few other brands' certified grades mixed in. How about using them for batting practice or hand-tossed knock drills? Some have broken shafts or frayed feathers. How about using them for knock practice or baseball batting practice? I will ship them with the shipping label attached directly to the box. They are in a case and a box. Thank you.