Plated steel wheel hub, less cup & cone. Lug nuts included. Bright zinc plated. Four bolts on a 4" circle. 1/2" - 20 x 1-1/4" welded bolts. 2-13/16" center to center. Use with 4.5" long spindles. Use with our AZ1004
, AZ1005
, AZ1006
or 30-401
steel wheels.