This bracket is from a smaller size Ottawa Hit & Miss engine. The 2 mounting holes that hole the bracket to your block measure 2 apart on centers. The magneto mount bolt hole pattern is 2″ x 2″ and would originally had taken a Webster model K magneto. This bracket is incomplete, armature is stuck, and will require some work! The armature shaft nut is missing and the threads will need some work. Please see pictures for the absolute best description. This item is far from working condition. Please research that this is the bracket you need before purchasing.