The 312 is a bag specifically designed to fit custom bikes and choppers.
It is made to attach to the swing arm with leather belts.
The bag measures 10" x 11.5" x 3" and by default comes as a single left side bag.
It usually works on left sides unless there is a left side mounted license plate.
It may work on the right side as well, depending on exhaust clearance.
The bag also comes in a fatter / wider version which measures 10" x 11.5" x 5".
See last picture for the wide bag.
Works well on Harley Davidson Softails, Yamahas and Kawasaki.
