Unquestionably The Strongest Wheel Stud Used In Nascar Today, Practically Every Driver's Reputation Rides On The Reliability Of Arp Wheel Studs. Beginning With The Finest Aerospace-quality Materials. Arp's Unique Manufacturing Technology And Exacting Quality Standards Are Brought Into Play To Create The Finest, Most Durable Wheel Studs Known To Man. Other Features Include Precision J-form Threads, Exclusive Nut-starter And Bullet Shape Radius That All But Eliminates Cross Threading, Shot-peening, Special Baked-on Dry Lube, And Double Magnaflux Inspection. Rated 190,000psi Tensile Strength.