Specifications: Steel Wheels Only Steer Axles Only 1.25" 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 53-123448-002 Gunite 3573X 3596X 3597X 3598X 3686X 3687X 3710X 3721AX 3726X 3758X 3774X 3800X Conmet N/A Motor Wheel Centrifuse N/A Webb N/A (Includes Wire Brush & Thread Chaser)