Wilwood’s ProStreet Hub Wheel Stud Kits contain 10 or 12 quantity high strength alloy studs for standard Pro Street and Drag Hubs. Studs (dependent on length) can have a Hex Socket head or 12 point head an 1/2-20 thread size and are available in 3 lengths, 1.75", 2.00" and 3.00" long. Studs are black oxide coating for corrosion resistance.