This item is used on multiple models.
Part number 25-50M
replaces the original hard knob 25-50
on some reels.
Part number 25-50M is discontinued. It is replaced by part number 25S-50M. The only difference is the knob stud. The 25-50M has a chrome knob stud. The 25S-50M has a polished stainless steel knob stud.