Not all shredders were 25,5 though Kramer NightSwan '88 Kramer ProAxe '90 ??th feature bolt on 24,75 scale,mahogany bodies(rare for SS) and 24 frets. I kinda prefer more classic SS though Like this one Bolt on guitars gives you the option to shim the neck so that you can achieve a perfect angle between your body and the locking tremolo,this is very important. This is why most wanky bar equipped guitars features bolt on necks. Of course there are many neck through shredders too like Jackson Soloists,StageMasters etc etc but the option to shim the neck isnt available on them as you can easily understand,this is why i dont really like them.