170mm right hand front crank
Sheldon Brown explain different bottom bracket sizes to fit the cranks on to, but cranks are made to fit in two different ways: when the crank is vertical, the square end of the bottom bracket can be horizontal or it rotated 45 degrees so that the crank appears as a diamond. I found out the hard way by buying the wrong crank shape.
Sheldon Brown info is at
do you have some pictures of the crank please
Excuse my ignorance it is a captains front crankset only?
Yes Phil, front cranks only for crossover drive ( chainwheel on left side)
Hi John if nobody else wants them I'll buy your front chainset.
message me at email@example.com
I will take the cranks if that's ok with you and Stuart