Steel plated “B” type hubs are 2-1/4″ OD by 1/2″ thick, and have a 1″ raised shoulder surrounding the bore for added stability.
5/8″ bore with a 3/16″ keyway and opposed set screw hole.
3 hole bolt pattern drilled on a 1-11/16″ circle to fit a P5256 sprocket pattern.
