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. It measures 10" x 11.5" x 3" and comes as a single bag. It also comes in the fatter version 312X which measures 10" x 11.5" x 5". It usually works on left sides unless there is a left side mounted license plate. It may work on the right side as well. Pictured on a Softail, Works on Harley Davidson Softails, Yamahas and Kawasaki.
These are the Best Bags on the Market, Hand Cut, not Mass Produced, Usually Takes 2-4 weeks to receive them.
These are returnable if you aren't happy with them!!