Specifications: Aluminum Wheels Only Steer Axles Only 1.10" 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 10014756 10020147 10033070 10037765 10012097 Motor Wheel Centrifuse N/A Webb N/A