Brand new zinc plated hub used for 4'' and 4.5'' brake drums or rear axle sprockets.
4" Outer Diameter
3/4" Bore with 3/16" keyway & 2 Set Screws.
(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.
Mounting hardware and 1/4'' key stock included.