Specifications: Steels Wheels Only Steer Axles Only 1.34"-1.37" Hole Diameter - 1/2" Hole Depth Features: Stays On Wheels Zinc Plated To Resist Corrosion Sold In Sets of 6 Per Axle Machined from Solid Steel Bar Stock Threaded Inside for Accurate Alignment Supported Brake Drums: Arvin Meritor N/A Gunite N/A Conmet 107507 10009920 10005332 10033071 1001783 10037815 Motor Wheel Centrifuse N/A Webb N/A