PTO Shaft for Flail Shredders Alloway S15CD S20CD S25CD S27CD Our PTO shaft is customized to meet the requirements of any of the models below: Alloway Shredders Models S15CD, S20CD, S22CD, S25CD, S27CD Ever-power Shredders employ a variety of clutches at the connection to the end. Some are unique and have to be replaced in a similar manner. Others are more general and are replaceable by various devices. The main thing to remember is whether or whether the input shaft is fitted with grooves, such as those on the PTO output of a tractor.