Brake Drum Product Specifications:
4 1/4″ Outside Diameter
Bore is 2″
Height: 1″
(4) 3/8″ Holes on 2 7/8″ Circle
(4) 5/16″ Holes on 2 13/16″ Circle
Brake Hub Product Specifications:
Adapts to 4 1/2″ Brake Drum
Zinc Plated
1″ Bore with 1/4″ keyway & 2 Set Screws
4″ OD
(4) 1/4″ Bolt Holes on a 3.228″ Bolt Hole Circle
(4) 3/8″ Bolt Holes on a 2 7/8″ Bolt Hole Circle