Specifications: Front Brake Drums 19.50"/22.50"/24.50" Wheel 1 1/8" Wheel Studs Various Brake Drum Sizes 1.25" Hole Diameter - 1/2" Hole Depth Features: Use With Solutions "A" & Solution "C" Centers Brake Drum Holes To Stud Stays On Wheels Machined from Solid Steel Bar Stock Zinc Plated To Resist Corrosion Sold In Sets of 6 Per Axle Use On: BUDD Wheel System Stud Piloted System Ball and Seat System (Budd Steer Wheels)