Originally Posted by
corwin1968
These crankarms are of unknown age:

Deore FC-MT60 crankarms, circa 1989-1992. Requires 110mm/74mm bolt pattern chainrings and 122.5mm long square-taper bottom bracket. I'm 99% certain that you'll need a bottom bracket in addition to chainrings to make them work- a pricey proposition. You'd be better off getting a complete crankset, including BB.