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 also discontinued. It has been replaced by part number 25S-50M.
The only difference between the two knob studs is that the 25-50M has a chrome knob stud
and the 25S-50M has a polished stainless steel knob stud.