Cuefix is spot on. I believe the first Predator shafts were 12 piece with a 1 inch ferrule. Then they changed to less pieces with a 3/4 ferrule. Someone mentioned here that the ferrule material was called Isoplast. Something like that. But around that time Jerry Powers was selling multiple pie shafts. Predator was also selling partials and not all Cue makers put the logo on. Now, distrubitors are selling pie shafts.