RacingBrake wheels studs are made of alloy steel, heat treated, and certified to SAE 10.9 class.

Length: 55mm / 2.18" (12mm / .47" longer than stock studs)
Proof Load: 830 MPa (120,000 psi)
Tensile Strength: 1,040 MPa (151,000 psi)

Installation: These studs are for both front and rear hubs. Depending on how the old the studs were that were extracted from the hub (front or rear), it may be necessary to “enlarge” the hub hole just a little bit (or clean the spines in the hole) for easier engagement with the new studs. This is very common. This may not be necessary, but if you do have to do it, you can simply use a round file (not a drill) to “clean" the hole.

These studs are offered as an upgrade to the stock wheel studs for racing purposes.