✿ Compatible with 98-02 Camaro/Firebird F-Body. For 97-03 C5 Corvette. For 99-03 Silverado/Sierra GM Trucks (4.8L, 5.3L, 6.0L).
✿ Centerless ground and heat treated before thread rolling, are designed to maximize reliability and strength, with nominally rated 220K psi tensile strength.
✿ Made of iron with good ductility with black oxide finish, high temperature resistance
✿ Easy to install, direct replace the old rusted bolts, improve car performance
✿ Package include20* M11 Head Studs; 10* M8 Studs; 30* Parallel-ground Washers; 30* 12-point Nuts.(If you find any stud missing ,please send us mail by our store home page for help !)