Lexus IS 300, (A) Knurl Diameter .558, Thread Size M12 x 1.5, (L1) Under Head Length 2.600, (L2) Knurl Length .230, (L3) Nose Length none, ARP Wheel Studs 100-7715ARPs heat-treated 8740 chrome moly wheel studs are a much-needed replacement for any car engaged in oval track or drag racing competition. ARP Wheel Studs have a tensile strength of 200,000 psi and are able to easily handle the tremendous acceleration shock loads (shear) and lateral forces (elongation) found in racing. ARP Wheel Studs are sold in 4 or 5 packs and are cadmium plated for extra durability. Nuts not included. Now available for all popular applications, including General Motors, Ford, Honda and Chrysler replacements, as well as for oval track racing and aftermarket street and strip axles.